List of World Trigger characters

The article is a list of characters that appear in the action sci-fi manga and anime, World Trigger.

Main characters

Yūma Kuga (空閑 遊真, Kuga Yūma)

Voiced by: Junko Minagawa (vomic), Tomo Muranaka (anime) (Japanese); Cathy Weseluck (English)

He has a laid back attitude, and isn't very knowledgeable of Japanese customs, leading him into confusions with the wrong people. When he was 11, he and his father Yūgo Kuga (空閑 有吾, Kuga Yūgo) were on a war in the Neighbor world, lending their power to an old friend of his father. In an occasion where his father told him not to follow him, Yūma disobeyed his father, sneaking into battle, which caused his death. His father, finding his dying son, sacrificed his life to create a Black Trigger (黒(ブラック)トリガー, Burakku Torigā) to revive Yūma. His guardian, Replica, told him to go to the Human world and see if Border could find a cure to his condition (though he wanted to bring his father back instead), only to find out they didn't know the answer either. In chapter 33 he officially joined Border as a C-Rank attacker in Mikumo Unit. As he explained, he's what they actually call a "Neighbor", and the creatures that have been attacking the human world are actually "Trion Soldiers", drones created to perform different tasks. He received the nickname "C-Rank White Devil" (C級の白い悪魔, C-kyū no Shiroi Akuma), and in the B-Rank Wars, his nickname becomes "White Nightmare", due to his white hair and ferocity in battle. Despite his young appearance, he is 15 years old. He is an Attacker that uses Scorpion to fight in the Rank Wars.

Osamu Mikumo (三雲 修, Mikumo Osamu)

Voiced by: Ryōta Ōsaka (vomic), Yūki Kaji (anime) (Japanese); Brian Doe (English)

A Border agent with low Trion level. He is usually referred as simply "Four Eyes" by people outside the Mikumo unit. He later promoted into B-Rank Border and later became a Shooter and the leader of Mikumo Unit. He became Chika's protector after her older brother (and his tutor) disappeared mysteriously, and joined Border in order to be better able to protect her, but the examiner suggested him o become an Engineer or Operator, due to his low trion. Unable to accept this, he imprudently tried to infiltrate Border's headquarters and negotiate with them, but he was almost attacked by a Bamster, which was destroyed by Jin. He befriended Yūma after he was transferred to his school. He is 15 years old. He is a Shooter. His Side Effect is the ability to drink a can of corn soup without leaving any kernels.

Chika Amatori (雨取 千佳, Amatori Chika)

Voiced by: Nao Tamura (anime) (Japanese); Caitlyn Bairstow (English)

A girl with huge trion level, which "attracts" Trion Soldiers towards her. Her brother Rinji and friend were captured by the neighbor, and tired of running away and looking for a way to rescue them, she joins Border as a C-Rank Sniper in Mikumo Unit. She purposely keeps herself away from others because she is afraid she'll cause them to be captured by Neighbors and she doesn't want to get hurt. She also has a side effect that allows her to feel the presence of Trion Soldiers and hide her presence from them. Izumi labeled her as "Tamakoma's Trion Monster" (玉狛のトリオン怪獣 (モンスター), Tamakoma no Torion Monsutā), due to her huge amount of trion. In the B-Rank Wars, the official nickname is "Super Trion Monster". She has short hair styled in a hime cut, with a cowlick in the middle. She is 13 years old.

Replica (レプリカ, Repurika)

Voiced by: Yūichi Iguchi (vomic), Hideyuki Tanaka (anime) (Japanese); Marco Soriano (English)

Yūma's guardian, created by his father to protect Yūma and teach him right from wrong. He has information on various countries that Yūma and his father visited. He was the one who told Yūma to come to the human world. Replica told Osamu Yūma's story, and asked him to give Yūma a new goal. At the end of the large scale invasion by Aftokrator, Replica is severely damaged. While in this state he, with the help of Osamu, infiltrates the black trigger ship and manages to send the ship back. While this ultimately saved Osuma and Chika, replica was unable to leave the ship. It is currently unknown if he managed to survive or if he is still "alive" or not.

Yūichi Jin (迅 悠一, Jin Yūichi)

Voiced by: Toshiki Masuda (vomic), Yūichi Nakamura (anime) (Japanese); Andrew Francis (English)

Yūichi is an A-Rank Solo Attacker (originally S-Rank) at Border with precognitive powers. He is a very friendly and carefree person. He is a self-proclaimed "Talented Elite", but his skills and strategies in battle are more than enough to back up his confidence. His mother was killed by Neighbors but despite that, he doesn't hate Neighbors, as he has been to the Neighbor World and knows not all Neighbors are evil. He was the one who invited Yūma to join Border. Like Yūma's father, his mentor Sōichi Mogami (最上 宗一, Mogami Sōichi) sacrificed his own life to create a Black Trigger, which Yūichi competed for, and later gave it away so that Yūma could officially join and be recognized as a Border agent by Headquarters. He is 19 years old.

Border

Tamakoma Branch

Tamakoma Branch (玉狛支部, Tamakoma-shibu) is a faction of Border which believes Neighbors and Humans can be friends, and takes a more diplomatic approach to them. Tamakoma Branch's engineers created various Triggers which are a lot more powerful than those in the Headquarters.

Takumi Rindō (林藤 匠, Rindō Takumi)

Voiced by: Keiji Fujiwara

The branch chief of Tamakoma Branch, a carefree and friendly man. Due to his past experiences, he learned that not all Neighbors are enemies of the Human race, and thus wants to befriend all those among them who are good. He was the pupil of Yūma's father, who guided and trained him when he was a newcomer to Border. Due to that, he feels indebted to Yūma's father and wants to give him the same treatment Yūgo has given to him. He wanted for Yūma to join Tamakoma Branch, but Yūma declined at first, later accepting to join as part of Mikumo Unit.

Tamakoma First

The Tamakoma First (玉狛第１, Tamakoma Dai 1) is a Team which is described as being Border's strongest team. They are prohibited to participate in Border's Rank Wars due to their triggers being considered too powerful. All of its combatants are All-Rounders.

Reiji Kizaki (木崎 レイジ, Kizaki Reiji)

Voiced by: Tomoaki Maeno

The leader of the team. He is experienced as an Attacker, Gunner and Sniper, and is Chika's mentor. He is a usually calm and serious person, and is usually the one to point out to Kirie that she is being tricked. He is 21 years old.

Kyōsuke Karasuma (烏丸 京介, Karasuma Kyōsuke)

Voiced by: Jun Fukuyama (anime)

A fun-loving and cocky individual, who becomes serious in combat. He has mentored Osamu and Ai. He likes teasing Kirie Konami, due to her gullibility. He is 16 years old.

Kirie Konami (小南 桐絵, Konami Kirie)

Voiced by: Rie Kugimiya (anime)

A wild but gullible girl. She is very credulous, and will believe almost anything people say to her. Due to that, people frequently make fun of her, principally Yūichi, Kyōsuke and later Yūma. She is 17 years old.

Shiori Usami (宇佐美 栞, Usami Shiori)

Voiced by: Eri Nakao (anime)

A nerdy girl who is Tamakoma First's Operator. She tends to get overconfident sometimes, which annoys Yūichi. She also created the "Yashamaru Series" (「やしゃまるシリーズ」), a group of Mole Mods developed for training agents, each one with a differing "personality", as described by Shiori. She also works as an operator for Jin and Mikumo Unit, and she used to be the operator of Kazama Unit. She is 17 years old.

Mikumo Unit

The Mikumo Unit (三雲隊, Mikumo-tai) A new team formed by Osamu Mikumo (leader), Yūma Kuga and Chika Amatori. The Unit was formed because Chika wanted to join the Expedition Force and search for Chika's lost brother and friend, and because Replica asked Osamu to give Yūma a new goal. Osamu originally wanted for Yūma to be the team captain, but Yūma only accepted joining Tamakoma Branch with the condition that Osamu was the captain. They're currently No. 6 in the B-Rank ranking.

Others

Yōtarō Rindō (林藤 陽太郎, Rindō Yōtarō)

Voiced by: Megumi Urawa (anime)

The son of Mr. Rindō. He frequently says things he shouldn't, like asking Chika to marry him. He has a pet capybara called Raijinmaru (雷神丸). According to Volume 3's extras, he has the Side Effect ability to talk to animals.

Headquarters

The Headquarters (本部, Honbu) is Border's main branch, led by Masamune Kido. It's the base for most of Border's teams.

Masamune Kido (城戸 正宗, Kido Masamune)

Voiced by: Takuya Kirimoto

The Leader of Border, a bitter man with a scarred face who hates all Neighbors, and wanted to eliminate Yūma and take his Black Trigger from him. According to Shinoda, however, he was the one closest to Yūgo and most moved by his death, despite not showing it. He is 42 years old.

Masafumi Shinoda (忍田 真史, Shinoda Masafumi)

Voiced by: Takeshi Kusao

The General Manager and Commander of the Self-Defense Unit of Border, who is also known as Border's strongest man with a normal Trigger. Like Takumi, he was a student of Yūgo and he is 33 years old.

Eizō Netsuki (根付 栄蔵, Netsuki Eizō)

Voiced by: Bin Shimada

The Media Countermeasures Chief, a frail-looking middle-aged man with a prominent nose who is prone to nervous outbursts. In situations of danger is always the first one to panic.

Motokichi Kinuta (鬼怒田 本吉, Kinuta Motokichi)

Voiced by: Kōzō Shioya

The Headquarters Development Chief, a short and squat man with a short temperament, but also a deep love for the little ones. He is said to have a little daughter. He is 48 years old.

Katsumi Karasawa (唐沢 克己, Karasawa Katsumi)

Voiced by: Eiji Takemoto

The Foreign Affairs Operations Manager, a calm and recluse guy who prefers to listen to others. He is an avid negotiator who believes it is possible to negotiate with anyone as long as you know what they want. He is 33 years old.

Kyōko Sawamura (沢村 響子, Sawamura Kyōko)

Voiced by: Hōko Kuwashima

Shinoda's subordinate and Border's General Manager Counsellor. She's a temperamental woman who is annoyed by Jin's sexual harassment. She also looks up to Shinoda.

Border Teams

A-Rank

Tachikawa Unit

The Tachikawa Unit (太刀川隊, Tachikawa-tai) is one of Border's strongest teams, and No. 1 in the A-Rank ranking. Their emblem has a design with a crescent moon and three sword blades, diagonally arranged in parallel to each other.

Kei Tachikawa (太刀川 慶, Tachikawa Kei)

Voiced by: Daisuke Namikawa

Kei is the leader of Tachikawa Unit, and Masafumi Shinoda's apprentice. He is a charismatic and cocky individual who enjoys teasing Shūji, and is also shown to be a good strategist. He is Border's No. 1 agent, and he is said to be better in true swordsmanship than Jin. He and Jin have long been rivals, and he is excited when Jin goes back to participating in the Rank Wars.

Kōhei Izumi (出水 公平, Izumi Kōhei)

Voiced by: Kaito Ishikawa

Kōhei is a member of Tachikawa Unit and a reckless Shooter, who thinks blowing things up is always the best option (though luckily someone is usually around to prevent him from doing so), which earned him the nickname "bullet idiot" from Yōsuke Yoneya. He has a habit of combining his bullets into stronger ones.

Takeru Yuiga (唯我 尊, Yuiga Takeru)

Voiced by: Tetsuya Kakihara

Takeru is a member of Tachikawa unit and is a Gunner. He is the son of Border's biggest sponsor, and has a very narcissistic personality. He'd requested to be placed in an A-Rank unit, hence being put into Tachikawa Unit by Masamune Kido. However, he lacks many skills as an A-Rank agent. Izumi had even said that his fighting is unfavourable compared to many B-Ranks.

Yuu Kunichika (国近 柚宇, Kunichika Yuu)

Voiced by: Umeka Shoji

Yuu is Tachikawa Unit's operator, a young girl with a bright smile and messy hair. She has a strong liking for video games, as she is often seen gaming with her teammates Izumi and Tachikawa. If she loses a game, she cries.

Fuyushima Unit

The Fuyushima Unit (冬島隊, Fuyushima-tai) is team No. 2 in the A-Rank ranking. Their emblem is a knight chess piece with unicorn horn.

Shinji Fuyushima (冬島 慎次, Fuyushima Shinji)

Voiced by: Ryōtarō Okiayu

Shinji is the captain of Fuyushima Unit, and a Trapper. He didn't participate in the raid to take Yūma's trigger. According to Tōma, it was because he had sea-sickness.

Isami Tōma (当真 勇, Tōma Isami)

Voiced by: Mitsuo Iwata

Isami is a Sniper and the No. 1 Sniper in all of Border. He is an arrogant man with a pompadour who likes teasing Tōru, the No.# 02 Sniper. He, however, is friendly and able to recognize a strong opponent. He was mentored by Azuma.

Kazama Unit

The Kazama Unit (風間隊, Kazama-tai) is team No. 3 in the A-Rank ranking, who rose in the A-Rank ranking thanks to Shirō's side effect. Their emblem is composed of a crossed-out eye.

Sōya Kazama (風間 蒼也, Kazama Sōya)

Voiced by: Hikaru Midorikawa

The leader of Kazama Unit, an Attacker who is older than his height suggests. He is a serious and no-nonsense person, rarely showing any emotion, and is also very proud. He is 21 years old, despite being only 1.58 m (5 ft 2 in) tall.

Ryō Utagawa (歌川 遼, Utagawa Ryō)

Voiced by: Hiroaki Miura

An All-Rounder from Kazama Unit. Unlike the stoic Sōya and the foul-mouthed Shirō, he's a rather gentle and friendly person.

Shirō Kikuchihara (菊地原 士郎, Kikuchihara Shirō)

Voiced by: Hisayoshi Suganuma

An Attacker from Kazama Unit. He's a foul-mouthed young boy with little respect for those he considers weak and even his teammates, and seems to consider himself more important than he really is. Despite that, he seems to be a gentle person, as according to the official World Trigger twitter he likes "friends and buddies".

Kaho Mikami (三上 歌歩, Mikami Kaho)

Voiced by: Machiko Toyoshima

The operator of Kazama Unit, who replaced Shiori in that role. She is a young girl with short black hair style in a bob cut.

Kusakabe Unit

The Kusakabe Unit (草壁隊, Kusakabe-tai) is team No. 4 in the A-Rank ranking. Its only known member is Shun Midorikawa. Their emblem is a dragon-headed rooster, with a laurel wreath-looking design behind it.

Shun Midorikawa (緑川　駿, Midorikawa Shun)

Voiced by: Yukiko Morishita

Midorikawa is a 14-year-old Attacker. He is a prodigy, having reached A-Rank at such a young age, and managed to defeat a Neighbor simulation in just 4 seconds on his first try. He is shown to be arrogant, and enjoys showing off, until he is humbled by Yūma after attempting to humiliate Osamu, who he believed was getting too much attention.

Arashiyama Unit

The Arashiyama Unit (嵐山隊, Arashiyama-tai) is team No. 5 in the A-Rank ranking. They are known as "the face of Border", due to their frequent appearances in Border propaganda and promotional material. Because they spend so much time doing publicity for Border, they are believed by many to be inferior to the other A-rank teams, though this has been shown to be untrue. Their emblem has a design composed of 5 small black pentagons with a white star symbol inside each, arranged so as to form another star symbol.

Jun Arashiyama (嵐山 准, Arashiyama Jun)

Voiced by: Nobuhiko Okamoto (anime)

Jun is the leader of Arashiyama Unit and an All-Rounder. He is a fun-loving and charismatic individual and also a loving older brother to his brother Fuku (副) and his sister Saho (佐補), although they are embarrassed by his overt displays of affection. He quickly befriends Osamu and Yūma after they save the students in their school, which include his siblings. He later congratulates Osamu on his promotion and Yūma for joining Border.

Ai Kitora (木虎 藍, Kitora Ai)

Voiced by: Kana Hanazawa

Ai is an All-Rounder from Arashiyama Unit who considers Osamu to be her rival (though she denies such). She's a member of Arashiyama Unit and a child prodigy, having joined Border as an A-Rank member during her Middle School days. She's always trying to show Osamu she's better than him, though Osamu isn't competitive about it. She does however have a gentle and humble side to her, and is willing to help anyone in need. She also seems to be interested in Osamu's growth.

Mitsuru Tokieda (時枝 充, Tokieda Mitsuru)

Voiced by: Yūta Kasuya

Mitsuru is a boy with a bowl cut, an All-Rounder from Arashiyama Unit. He calm and quiet, unlike his teammates, and doesn't talk much unless he has something important to say.

Ken Satori (佐鳥 賢, Satori Ken)

Voiced by: Kota Nemoto

Ken is the Sniper of Arashiyama Unit, a cocky and goofy but friendly person. Despite his funny personality, he's the only sniper able to fire two rifles simultaneously without losing any precision.

Haruka Ayatsuji (綾辻 遥, Ayatsuji Haruka)

Voiced by: Shiori Mikami

Haruka is the Operator of Arashiyama Unit, a pretty and smart girl with a bowl cut similar to Chika's but a little longer and without the cowlick.

Kako Unit

The Kako Unit (加古隊, Kako-tai) is team No. 6 in the A-Rank ranking, and an all-girls team. Their emblem is composed of a butterfly (possibly a swallowtail) with spread wings, with the uppercase letter K in place of the lower right wing's pattern.

Nozomi Kako (加古 望, Kako Nozomi)

Voiced by: Misa Watanabe

Kako is the leader of Kako Unit and a shooter. She enjoys battles. Jin mentioned her as a candidate for the Fūjin.

Futaba Kuroe (黒江 双葉, Kuroe Futaba)

Voiced by: Yukana

Kuroe is an Attacker of Kako Unit. Tsutsumi mentioned her as a prodigy along with Kitora and Midorikawa, having defeated a Neighbor simulation in 11 seconds on her first try.

Miwa Unit

The Miwa Unit (三輪隊, Miwa-tai) is team No. 7 in the A-Rank ranking. Their emblem is composed of two black snakes spiraling around a bullet.

Shūji Miwa (三輪 秀次, Miwa Shūji)

Voiced by: Masakazu Morita

Shūji is an All-Rounder and the leader of Miwa Unit, who joined Border to avenger the death of his sister, who was killed by a Neighbor. Due to his sister's death, he hates Neighbors, not differentiating good ones from evil ones. His main trigger is the Asteroid, which has no special ability on its own but is equipped with the ability Red Barrette (鉛弾(レッドバレット), Reddo Baretto, lit. "Lead Bullet"), which can bypass shields and immobilize enemies, due to the bullets being very heavy. He was a member of the original Azuma Unit.

Yōsuke Yoneya (米屋 陽介, Yoneya Yōsuke)

Voiced by: Daisuke Kishio

Yōsuke is a fun-loving individual who loves a good battle. He's an Attacker. He uses the trigger Gen'yō Kogetsu. Unlike his teammates, he doesn't hate Neighbors, and he wants to have a battle with Yūma just for fun.

Tōru Narasaka (奈良坂 透, Narasaka Tōru)

Voiced by: Yūsei Oda

Tōru is the No. 2 Sniper on Border. He harbours a grudge against Neighbours due to his house being destroyed in an invasion. He was mentored by Azuma.

Shōhei Kodera (古寺 章平, Kodera Shōhei)

Voiced by: Yasuhiro Takato

Shōhei is a bespectacled boy and another Sniper. He, like Tōru, had his house destroyed, and thus hates Neighbors.

Ren Tsukimi (月見 蓮, Tsukimi Ren)

Voiced by: Chihiro Ikki

The Operator of Miwa Unit and a childhood friend of Kei, who mentored him in tactics. She was mentored by Azuma.

B-Rank

Ninomiya Unit

The Ninomiya Unit (二宮隊, Ninomiya-tai) is team No. 1 in the B-Rank ranking. They were an A-Rank team, but were demoted to B-Rank due to Hatohara's defection.

Masataka Ninomiya (二宮 匡貴, Ninomiya Masataka)

Voiced by: Junichi Suwabe

The captain of Ninomiya Unit and Border's No. 1 Shooter, who believes only people stronger than oneself are worthy of respect, but at the same time can respect people he considers weaker, such as Izumi, who he requested to mentor him despite already Border's No. 1 Shooter back then. He considers Osamu and Chika unfit for the expedition missions. He was a former member of the original Azuma unit, and is constantly being picked on by his former teammate, Kako.

Mirai Hatohara (鳩原 未来, Hatohara Mirai)

Voiced by: Ai Maeda

Ninomiya Unit's former sniper, who wanted to be part of the expedition force. Her unit lost the right to join, however, due to her being unable to shoot people even in their trion bodies, although she was able to disarm them without directly shoot them. She later joined 3 civilians and gave them triggers in order to go to the neighborhood, never to appear again. It is theorized Chika's brother Rinji was one of the civilians, as he disappeared in the same day.

Kageura Unit

The Kageura Unit (影浦隊, Kageura-tai) is team No. 2 in the B-Rank ranking.

Masato Kageura (影浦 雅人, Kageura Masato)

Voiced by: Tomokazu Sugita

The leader of the Kageura Unit. He caused his Unit to be demoted to B-Rank due to his violent behavior. He forms a friendly (albeit rocky) rivalry with Yūma following their match. He appears to dislike Ninomiya Unit, especially Sumiharu Inukai.

Yuzuru Ema (絵馬 ユズル, Ema Yuzuru)

Voiced by: Yūko Sanpei

The Sniper of Kageura unit. He befriends Chika and starts training her since he doesn't want her to have the same fate as his master, Mirai Hatohara, who he was very fond of. He also dislikes Ninomiya Unit, saying it's a feeling shared by his team. He specifically hates Ninomiya, due to the way he treats Hatohara as a traitor.

Ikoma Unit

The Ikoma Unit (生駒隊, Ikoma-tai) is team No. 3 in the B-Rank ranking.

Yuba Unit

The Yuba Unit (弓場隊, Yuba-tai) is team No. 4 in the B-Rank ranking.

Ōji Unit

The Ōji Unit (王子隊, Ōji-tai) is team No. 5 in the B-Rank ranking.

Azuma Unit

The Azuma Unit (東隊, Azuma-tai) is team No. 6 in the B-Rank ranking.

Haruaki Azuma (東 春秋, Azuma Haruaki)

Voiced by: Kenji Hamada

Haruaki was the first Sniper in Border, and is the captain of Azuma Unit. He trained Narasaka, Tōma and Kizaki, among other snipers of Border, and also tutored Ren Tsukimi in tactics.

Other agents

Izuho Natsume (夏目 出穂, Natsume Izuho)

Voiced by: Hiromi Konno

A 14 years old C-Rank Sniper who befriends Chika. She's rather foul-mouthed for her age, and a self-described lazy. She seems to like cats, as she has been carrying one on her head ever since Aftokrator's invasion began.

Tsukihiko Amō (天羽 月彦, Amō Tsukihiko)

Voiced by: Tsubasa Yonaga

A 16 years old S-Rank agent and Black Trigger user, feared by civilians and even other Border agents due to being aggressive and highly destructive in battle, although his ability has yet to be seen. He can't get himself in the mood during battle as his opponents are too dull for him.

Kōda Unit

The Kōda Unit (甲田隊, Kōda-tai) A Trio of C-Rank agents who were seemingly made to believe that Arashiyama Unit has no real strength. They're frequently trying to show off, but get constantly beaten up. As they are still C-Rank, they're not an official unit, as only A-Rank and B-Rank agents can form units. According to Replica, they seem like idiots. Their surnames are revealed in their anime credits and their given names in the first databook.

Teruteru Kōda (甲田 照輝, Kōda Teruteru)

Voiced by: Ryōsuke Kanemoto

The group's leader, a Shooter who uses Hound.

Fumifumi Saotome (早乙女 文史, Saotome Fumifumi)

Voiced by: Ryōhei Arai

Another Shooter who uses Hound.

Hidehide Hinoe (丙 秀英, Hinoe Hidehide)

Voiced by: Yūsuke Handa

An Attacker who uses Kogetsu.

Civilians

Kasumi Mikumo (三雲 香澄, Mikumo Kasumi)

Voiced by: Ai Maeda

Osamu Mikumo's mother, who is frequently mistaken for his sister due to her young appearance. She worries a lot about her son, but allowed him to continue working on Border despite him almost dying. She also has the habit of threatening to beat people with a stick, which she found in the river where she does laundry. She is 39 years old.

Ichinose (一之瀬)

Voiced by: Eri Nakao

One of Osamu and Yūma's classmates, a friendly and smart girl with pigtails. She seems to be good friends with Futatsugi.

Futatsugi (二ツ木)

Voiced by: Yurie Kobori

One of Osamu and Yūma's classmates, a happy and excitable girl who quickly befriends Yūma. She seems to be good friends with Ichinose.

Miyoshi (三好)

Voiced by: Yūsuke Handa

One of Osamu and Yūma's classmates, a noisy and fun-loving boy who is a big fan of Border. He knows a lot about Border and wants to join the organization.

Yotsuya (四ツ谷)

Voiced by: Ryōhei Arai

One of Osamu and Yūma's classmates, a calm and level-headed boy. He seems to find Miyoshi's obsession with Border annoying.

3 Idiots (３バカ)

Voiced by: Mitsuo Iwata (No. 1), Kōta Nemoto (No. 2) and Hiroaki Miura (No. 3)

A trio of bullies from Osamu and Yūma's classroom. They bully Osamu and Yūma at first, but start fearing them after they find out Osamu is a Border agent and after Yūma scares them away.

Rinji Amatori (雨取 麟児, Amatori Rinji)

Voiced by: Hirofumi Nojima

Chika's older brother, who seemed to be mistrustful of Border and wanted to protect her on his own. He made Osamu promise that Osamu would protect Chika should something happen to him. He obtained a trigger through an unknown party and wanted to explore the world on the other side together with that party. However, on the day planned for the travel, he mysteriously disappeared, leaving Chika alone and in despair.

Aoba Harukawa (春川 青葉, Harukawa Aoba)

Voiced by: Shiori Mikami

Chika's friend, who was the only one who believed her at the time neighbors started chasing her, as at the time Border didn't yet have a base and nobody knew anything about Neighbors. She promised she'd protect Chika, but some time after she mysteriously disappeared. Since then, Chika became afraid of asking others for help and distanced herself from other people. Her name is not revealed in the manga, only in the anime.

Neighbor Worlds

The is divided in many different countries, which are "planets" which follow different orbits, and some which fly around freely. Yūma's father Yūgo calls these countries "Planet States".

Liberi

Liberi (リーベリー, Rīberī) is a maritime nation surrounded by a rich, vast sea. Liberi is the Latin word for "children".

Leoforio

Leoforio (レオフォリオ, Reoforio) is the cavalry nation which Trion Soldiers as mounts. Leoforio (λεωφορείο leo̱forío) is the Greek word for 'bus'.

Chion

Chion (キオン, Kion) is a snow country where the harsh terrain and climate thwart enemies from attacking. Chion (χιων chión) means "snow", and is the name of the Greek goddess of snow.

Aftokrator

The god's country and the largest military state. Aftokrator (αυτοκράτωρ af̱tokráto̱r) is the Greek word for "emperor".

Hairein/Hyrein (Viz) (ハイレイン, Hairein)

Voiced by: Nozomu Sasaki

He is one of the trigger users of Aftokrator and a commander of their invading army attacking Earth. He is the leader during Aftokrator's invasion and Lamvanein's older brother. He has grey hair and impala-like horns. His Trigger is Alektor (卵の冠(アレクトール), Arekutōru, lit. Egg Crown), a black trigger which can create animals out of Trion, which can transform any Trion body (including triggers) into Trion cubes upon contact, but doesn't have the same effect on physical bodies. According to Volume 9, he is a pacifist, and fears Moira. His name Hairein is the Greek verb for "to take", and the origin for the English word "heresy", while his trigger's name Alektor (αλέκτωρ alékto̱r) is the Greek word for "rooster".

Lamvanein/Rambanein (Viz) (ランバネイン, Ranbanein)

Voiced by: Junichi Yanagita

He is one of the trigger users of Aftokrator and a member of their army attacking Earth. He is Hairein's younger brother. He is a tall figure with what appear to be short ram-like horns and red-brown hair. His trigger is Chelidon (雷の羽(ケリードーン), lit. Wings of Thunder), a trigger which can shapeshift into a multitude of different firearms and even a jet pack. His name Lamvanein (λαμβάνειν lamvánein) is the present active infinitive of the Greek verb Lamvano (λαμβάνω lambánō), "to take/receive", while his trigger's name Chelidon (χελιδόνι chelidóni) is the Greek word for "swallow".

Hyuse (ヒュース, Hyūsu)

Voiced by: Nobunaga Shimazaki

He is one of the trigger users of Aftokrator and a member of their army attacking Earth. He also has short but thick horns protruding away from his head and sandy-blonde hair. He is much younger than the other trigger users of Aftokrator. His trigger is Lampyris (蝶の盾(ランビリス), Ranbirisu, lit. Butterfly Shield), which controls small metallic shards which can be molded into shields, guns, wings, and even be used by Moira as markers to trace marked targets. After the Aftokrator invaders were forced to stop their invasion sooner due to Osamu and Replica's efforts and failed to capture Chika to make her Aftokrator's new god, he was left stranded on Earth as part of Hairein's original plan to sacrifice his master should they not find a suitable god, and became a captive of Tamakoma Branch. Despite this, he refuses to give Border information about Aftokrator. His trigger's name Lampyris (λαμπυρίς lampyrís) is the Greek word for "firefly".

Enedra (エネドラ, Enedora)

Voiced by: Toshio Furukawa

He is one of the trigger users of Aftokrator and a commander of their invading army attacking Earth. He has dark hair and long dark deer-like horns and squinty, shifty eyes. His right eye's iris has become black, which, along with his defiant personality, are said by Moira to have been caused by his trigger Vorvoros (泥の王(ボルボロス), lit. King of Mud), which makes him capable of liquefying and gasifying to attack his enemy in multiple ways. He is killed by Moira in order to recover Vorvoros, but his horns, which retain his memories and personality due to rooting to his brain, are implanted in a Radd, which becomes black, reviving him. Unlike Hyuse, he is much more willing to give information to Border about Aftokrator, due to their betrayal. His name Enedra (ενέδρα enédra) is the Greek word for "ambush", while his trigger's name Vorvoros (βορβορος vórvoros) is the Greek word for "mud".

Viza (ヴィザ)

Voiced by: Hiroshi Naka

He is one of the trigger users of Aftokrator and a commander of their invading army attacking Earth. He is an elderly man with grey hair and no horns. His trigger is Organon (星の杖(オルガノン), Oruganon, lit. Staff of Stars), a black trigger which creates sword-like "wheels" which can easily cut through anything. He was defeated by Yūma, a feat which impressed both Hairein and Moira. His trigger's name Organon (Ὄργανον Órganon) is the Greek word for "instrument", or "tool". It is a book written by Aristotle, and the collection of his six works on logic.

Mira (ミラ)

Voiced by: Yurie Kobori

She is one of the trigger users of Aftokrator and a commander of their invading army attacking Earth. She is a young woman with short red hair and short black horns on her forehead. She is the group's operator. Her trigger is Speiraskia (窓の影(スピラスキア), Supirasukia, lit. Shadow of the Window), a black trigger which can create portals of different sizes which use more or less Trion depending on the size, and can also be transformed in spikes to impale enemies. According to Volume 9, she is a sadist, and feared by Hairein. Out of political alliance of her and Hairein's family, she is slated to either marry him or Lamvanein. Her name Mira (μοίρα, moíra) is the Greek word for "fate", while her trigger's name Speiraskia is a combination of the Greek words speira (σπείρα speíra, spiral) and skia (σκια skia, shadow) which means "spiralling shadow".

Calvaria

Calvaria (カルワリア, karuwaria) is the fortress nation supported by Yūgo and Yūma because the self-defense commander of Calvaria was an old friend of Yūgo's. Calvaria is the Latin name for Calvary, where Jesus was crucified in the Bible. It is also the upper part of the neurocranium (skullcap). The citizens' names come from characters of Doraemon, a series which Ashihara is a confessed fan of and which is one of the inspirations of World Trigger.

Raymond (ライモンド, Raimondo)

Voiced by: Yasunori Masutani

He is the self-defense leader of the nation of Calvaria and a close friend of Yūma's father, Yūgo. He's named after Doraemon himself.

Izukacha (イズカチャ)

Voiced by: Kozue Kamada

Raymond's daughter and Vittarno's older sister. She's named after Shizuka Minamoto.

Vittarno (ヴィッターノ, Vittāno)

Voiced by: Yōko Teppōzuka

Raymond's son and Izukacha's younger brother. He's named after Nobita Nobi.

Spinthir

Spinthir (スピンテール, Spintēru) is a mid-sized border nation that attacked the country of Calvaria and also hired assassins to support their trigger users during an attack in Calvaria. Spinthir (σπινθήρ, spinthí̱r) is the Greek word for "spark".

Mysterious Assassin

This is a shadowy figure who targets trigger users of Calvaria during the invasion by Spinthir, and also killed Yūma.

Trion Warriors

Trion Warriors (トリオン兵, Torion Hei) are automated robotic soldiers developed for different purposes, ranging from surveillance to human/trion harvesting and to combat.

Bamster (バムスター, Bamusutā)

These are giant quadrupedal worm-like beasts. They are more than able fighters on their on with good body armor and powerful swings of its body or attacks by its huge mouth.

Mole Mod (モールモッド, Mōrumoddo, lit. guinea pig)

Marmots are bug like trion soldiers with the hardest blades of any of the Neighbor monsters. These units are built for melee combat as demonstrated by their speed and agility. They're small but tough to beat.

Ilgar (イルガー, Irugā)

These giant trion soldiers fly and are used for bombardment and turn even more dangerous if critically damaged.

Rads are the recon units of Trion forces from the other world. They are also capable of creating gateways by gathering trion of passersby. They appear similar to a cross between spiders crabs but are silver and white in color with a red or orange eye-like aperture on both its front and on its back, though the one on its back is slightly different. One probably acts as vision while the other generates gates. They have 6 legs and a tail.

Vander (バンダー, Bandā)

These are small worm like creatures tasked with capturing humans in the Earth world for the other world nations. They are not combat grade creatures like most of the trion soldiers invading from the other world. Though it is not combat unit, it is capable of defense by ranged attacks from its mouth.

Bado (バド)

A tadpole shrimp looking Trion Warrior. It appears to be just a surveillance drone, but will also capture unsuspecting people.

Rabbit/Rabit (Viz) (ラビット, Rabitto)

These tall humanoid like shaped trion soldiers are probably the toughest of them all and are designed solely for capturing trigger users. They are the mysterious "new unit type" seen during the invasion of the city. They are white, with rabbit like ears which are actually some type of radar sensors. In their stomachs are claws for catching which curl back into the chest cavity for form a makeshift cage for those captured. On their heads are eyes that can also shoot ranged attacks. Each of them is heavily armored, especially on the back, head, and arms.

Dog (ドグ, Dog)

One of the two types of trion warriors given to Galopoula by Rodochroun. As the name suggests, they resemble dogs. They commonly fight in packs, and are also used as surveillance.

Idra (アイドラ, Aidora)

The other of the two types of trion warriors given to Galopoula by Rodochroun. It has a roughly humanoid shape with a hunched posture. It is specialized in group combat.

Terms

Trigger controllers - Controllers are those who can use Trigger weapons.

Miden (玄界(ミデン), lit. Black World) - The term Neighbors commonly use to refer to Earth and its people. Miden (μηδέν mi̱dén), means "zero" in Greek.

Trigger On - This is the activation phrase used by controllers to activate their power mode so they can use their special powers, the trigger weapons.

Black Trigger - These are very rare special Trigger weapons with immense, unknown, and/or not fully understood powers and limitations. Black triggers are the only triggers that do not have a safety return to base feature like the B and A class triggers normally have. There are also limitations to who can use them as the power or spirit energy that makes up the power sources inside triggers selective of who it is willing to pair up with. As such, any Black Trigger user must be compatible with the trigger or nothing will happen.

Bail Out (紧急脱出(ベイルアウト), Beiruauto, lit. Emergency Escape) - Bail out is a safety system that is automatically triggered when the user takes too much damage or loses too much trion to continue fighting. This safety function ejects the user safely back to HQ via some sort of aerial teleportation method indicated by the distinctive blue streak it marks in the sky as its trail.

Neighbor - Though Border commonly refers to Trion Warriors as neighbors, the true Neighbors are humanoid or human beings.

Trion Warrior (トリオン兵, Torion Hei) - This is the actual name of the monstrous creatures coming from the other world to attack or capture humans.