Twin Signal

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Twin Signal
Twin signal manga.jpg
Cover of Twin Signal, featuring (clockwise from top right) Signal, Chibi Signal, Nobuhiko, and Pulse.
(Tsuin Sigunalu)
Genre Sci-fi
Written by Sachi Oshimizu
Published by Enix
Demographic Shōnen
Magazine Monthly Shōnen Gangan, Monthly GFantasy from October 2000
Original run December 1992December 2001
Volumes 19
Original video animation
Directed by Takashi Sogabe
Released 1995
Episodes 3
Wikipe-tan face.svg Anime and Manga portal

Twin Signal (ツインシグナル, Tsuin Sigunalu) is a manga series originally written by Sachi Oshimizu. It was later animated as a 3 episode anime OVA series. Both the manga and the OVA have been licensed by Media Blasters for distribution in the USA.

It follows the story of a humanoid created by a robotics expert named Dr. Otoi for his grandson, Nobuhiko. But in the process of writing and applying the programming, an unfortunate mishap takes place! Nobuhiko sneezes. Now, whenever Nobuhiko sneezes, the humanoid (named Signal) transforms from a temperamental adult robot into a chocolate-loving baby version of himself.

Despite this little error, the days spent with the Otoi crew are usually fun. Animals, people, and robots all can live in harmony.

Until one day, Signal is attacked by Pulse, a robot created by Dr. Otoi some time ago. Much like a prototype for Signal. Pulse is incredibly nearsighted, but makes up for what he lacks in vision with firepower. Dr. Otoi's mysterious rival has packed him to the brim with amazing weaponry, with the intent of stealing the Doctor's most recent robo technology.


  • Nobuhiko Otoi (Voiced by: Rica Matsumoto (Japanese); Michelle Newman (English)) :The grandson of Professor Otoi. Signal's 'little brother'. Because Nobu interrupted Signal's programming by sneezing, he ended up causing a glitch in MIRA. Every time Nobuhiko sneezes, Signal transforms into a 3-year-old chibi signal.
  • Signal (Voiced by: Hiro Yuki (Japanese); David Thund (English)) : The namesake of the series, Signal is the newest HFR (Human Form Robot) to be created by Professor Otoi. He is unique because of the MIRA and SIRIUS technology in him, which sometimes makes him a target of those wishing to steal his data. He is programmed to be a fighter and an older brother to Professor Otoi's grandson, Nobuhiko. Due to an accident in the lab during his creation, when Nobuhiko sneezes, it transforms Signal into a much smaller version of himself. He is referred to as 'Chibi Signal', is very hyper, and adores chocolate.
  • Mini Signal (Voiced by: Ikue Ohtani (Japanese); Michelle O'Medlin (English))
  • Professor Shinnosuke Otoi (Voiced by: Akio Otsuka (Japanese); Mike Pollock (English)): Nobuhiko's grandfather.
  • Masanobu Otoi (Voiced by: Issei Nimata (Japanese); Doung Bost (English)) :Professor Otoi's son, and Nobuhiko's father. Masanobu is also a robot scientist. He views the HFR's as tools with the exception of his former brother-figure, Karma.
  • Minoru Otoi (Voiced by: Kumiko Nishihara (Japanese); Caroline Bose (English)): Nobuhiko's mother and Masanobu's wife. She is a scientist as well.
  • Pulse (Voiced by: Takehito Koyasu (Japanese); Kevin Collins (English)) : The prototype for Signal made by Otoi-sensei and Masanobu. Originally he was seen with silver hair and a grey styled outfit. He was a very kind and gentle robot but then one day Masanobu made some changes, upgrading him into a highly skilled combat robot. His look then changed to black long hair and dark clothes with two massive blades connected to his arms. It also appears that he conducts electricity through his hair and then charges that power through his eyes like a laser. These changes were not entirely for the best. Now he seems to be VERY nearsighted and if he should get too worn down he passes out. His laser also decreases energy. He has what appears to be robotic narcolepsy. He and Signal constantly fight and tease each other, but Pulse seems to have a soft spot for Chibi Signal and often talks with him. It also appears he was/is friends with Kris.
  • Chris Sine (Voiced by: Yuri Amano (Japanese); Lisa Ortiz (English)): The one and only super smart robot scientist" as she would say. She's somewhat loud and obnoxious but yet still a likeable character. However despite her claims of being such a genius and beautiful robot scientist, Kris is a bit of a flop. Her robots often end up failing, or going berserk, or just simply getting smashed by Signal. But she wishes to create a super robot more powerful and impressive than any other, despite her failures. She soon becomes the apprentice of Dr. Otoi and appears to be friends with Pulse.
  • Elara (also Erala) (Voiced by: Yuri Shiratori (Japanese); Rachael Lillis (English)) : A somewhat ditsy little robot that really can't cook and tends to find herself in a lot of trouble. Yet she is very caring and loving. She seems completely oblivious to Signal's love for her.
  • Officer Maki (Voiced by: Tomoyuki Morikawa (Japanese); Michael Tremain (English)):
  • No. 3 ({{Voiced by|[[Akie Kusachi|Rachael Lillis}})
  • Flag (Voiced by: Masami Toyoshima (Japanese); Michelle O'Medlin (English)) :Pulse's flying companion in the OVA.
  • Hoshimaro Umenokoji (Voiced by: Ikuo Nishikawa (Japanese); John Avner (English)):
  • A Suke (Voiced by: Masaya Onosaka (Japanese); Jeff Ward (English)):
  • B Suke (Voiced by: Kujira (Japanese); Jeff Ward (English)):
  • Arano (Voiced by: ?? (Japanese); Abigale Gampell (English)):

External links[edit]