|Avatar: The Last Airbender/The Legend of Korra character|
|First appearance||The Boy in the Iceberg|
|Voiced by||Dee Bradley Baker|
|Aliases||Sky Bison, Wind Buffalo,Flying Bison|
|Bending Element||Air (master)|
|Hair color||White (with brown arrow shaped patch of fur)|
|Position||Protagonist's animal guide|
Appa is a fictional character on the Nickelodeon animated television series Avatar: The Last Airbender and in the film The Last Airbender. In the series, Appa is the only known living sky bison, a species of animals that can fly naturally, and is the animal guide of the protagonist, Aang. Dee Bradley Baker voices Appa, along with all the other animals, in both the TV series and the film.
Creation and conception 
The show's creators Michael Dante DiMartino and Bryan Konietzko have described Appa's appearance as a cross between a buffalo and a manatee. According to an interview with the artists involved with creating the show, Appa's design was based on that of Catbus from the movie My Neighbor Totoro, as they found it difficult to create a six-legged mammal.
In the Avatar franchise, Appa is the last known living sky bison, which are large mammal-like creatures that fly through airbending and steer through air currents with their broad tails. The bison are covered in thick white fur with a large brown arrow marking that is remarked to be extremely itchy. In the show, the markings on the flying bison's backs are what inspired the tattoos which symbolize an Air Nomad's mastery of Airbending. Their fur is shed at the end of winter. The Air Nomads summon the sky bison to their side through the use of whistles that only the animals can hear. Aang and friends use the words "yip yip" to get Appa to take off into the air.
Like all animals in the Avatar series, Appa cannot speak.
Throughout the series, Appa has demonstrated high intelligence and often appears to understand at least a portion of human speech whereas Momo, the winged lemur, struggles to understand. Overall, Appa is not very aggressive. Nonetheless, Appa has shown himself to be very capable of fighting when necessary. With his bending, Appa can create powerful gusts of air by whacking his tail.
Other aspects of Appa's character include his fear of fire and his trusting of those who have been kind to him. He can become quite temperamental towards anyone who he thinks is a threat to himself or his friends, especially Aang. Conversely, he has demonstrated an unrestrained affection towards those that he likes, often licking anyone he deems a friend. Appa also has a fear of going underground or in small tunnels, evidenced by his claustrophobic panic in the episode "The Cave of Two Lovers".
He has a special friendship with Momo the lemur, with whom he is often in company. Appa also shows a special preference towards Zuko (Initially being the only member of Team Avatar other than Toph to think letting Zuko join the group is a good idea) because Zuko saved him from his imprisonment beneath Lake Laogai.
Appa is featured prominently throughout the franchise, not only in the Avatar: The Last Airbender TV series, but also in the film The Last Airbender, various video games, and manga. Dee Bradley Baker voices Appa in both the TV series and the film.
In the animated series 
Appa is in almost every episode of the animated series, having appeared in 58 of the 61 episodes of the three seasons. Much of the back-story about the character comes from the episode Appa's Lost Days, "in which the most under-explored member of the team gets his very own episode."
The first meeting between Aang and Appa is seen during a flashback sequence in Appa's Lost Days. It is tradition with Air Nomads that each young Airbender is given a sky bison calf once they come of age to be the Airbender's lifelong animal companion. In a flashback on Appa's Lost Days, Appa's herd flies down to an Air Nomad Temple where Aang and other young Airbenders are waiting. Aang brings Appa an apple as a sign of friendship, which Appa accepts, sealing their bond as well as giving Appa his name, after the word "apple". Almost immediately, the two became friends and would remain close, Appa being the one thing aside from his staff and robes from Aang's home that Aang took with him when he fled the Southern Air Temple.
Appa remained in suspended animation along with Aang for 100 years until their discovery by Katara and Sokka. Since then, Appa has been the group's main form of transportation in their quest, as well as occasionally assisting in battle. Appa was a consistent part of the group throughout the series until his capture by the Sandbenders in "The Library".
Appa became lost for a short time when the group was traveling in the Earth Kingdom. He was kidnapped by Sandbenders in the middle of the vast Wan Wong desert, while Aang, Katara, Sokka, and their winged lemur Momo were trapped in a vast underground library. It is later revealed that he was eventually sold to a Fire Nation circus where an animal tamer attempted to make him part of the show. Appa later escaped and journeyed throughout the Earth Kingdom until he encountered the Kyoshi Island Warriors, who attempted to heal the various wounds he had sustained in his travels and escort him back to Aang. Appa was forced to leave after an attack by Azula and her allies, ushered away by Suki while the warriors tried to delay the three Fire Nation girls. On his journey he encountered a sadhu named Guru Pathik at the Eastern Air Temple, to which he had fled. Being healed of his personal turmoil and directed to Aang by the sadhu, Appa flew to Ba Sing Se, where he was captured by Long Feng.
Appa was kept in a secret location at Lake Laogai until his rescue by Zuko, who was initially planning on utilizing him to capture the Avatar. Appa eventually returns to the main group in the last scenes of Lake Laogai.
Appa still accompanies Aang and his group even after they enter the Fire Nation. However, in order to make sure that he does not give away Aang's identity when flying, Aang covers Appa with clouds as a disguise while in flight.
At the Western Air Temple, he was among the first members of the group to accept Zuko as Aang's firebending teacher, as he is still grateful for Zuko freeing him in Ba Sing Se. He flew Aang and Zuko to the Sun Warrior Temple in order to learn the origin of firebending. He also flew Zuko and Katara to the Southern Raiders ship, so Katara could confront the murderer of her mother.
After the search for Aang in the finale failed, the group was forced to divide their efforts to prevent the Fire Nation from wiping out the Earth Kingdom. Appa flew Zuko and Katara to the Fire Nation capital where they fought and defeated Azula before she could assume leadership of the throne. Afterward, Appa is last seen outside of Iroh's tea shop in Ba Sing Se, listening to Iroh play a horn.
In the film 
Appa appears in the 2010 live action film The Last Airbender with roar effects provided by Dee Bradley Baker. Appa's role in the film has been noted to be significantly less prominent than in the animated series.
The sky bison was rendered entirely in computer graphics for the film by Industrial Light & Magic (ILM), with Pablo Helman as visual-effects supervisor. Regarding the challenges of adapting the cartoon Appa into a realistic-looking CGI beast, Helman said:
"He has six legs, and that's a big challenge for us, because how do you take it into reality? There is no reference for a creature with six legs. Nature doesn't create those things. It's very difficult to get six legs to do the right thing. We looked at how elephants walked, which helped. We did some tests and figured out Appa would pretty much move like an elephant."
ILM animators also looked at polar bears while imagining the two front legs moving as arms while Appa walked.
In other media 
The first video game Appa appeared in is the 2006 Avatar: The Last Airbender. Appa also appears in Avatar: The Last Airbender - The Burning Earth and in Avatar: The Last Airbender - Into the Inferno. In the Avatar: The Last Airbender Plug It In & Play TV Game, Appa takes center stage in "Appa Air Attack" in which Appa destroys Fire Nation airships using his airbending abilities.
Promotion and merchandising 
Appa has been featured in varying pieces of merchandise, including toys and plush dolls. The sky bison has also been featured as a McDonald's Happy Meal toy—with Appa as a launcher that shoots out Momo, the flying lemur.
Reception and legacy 
KidsTelly.com's Dan G. Hughes noted that "the flying six legged bison has a lovingly sketched personality," further commenting how every character (including Appa) changes and grows throughout the series. Kevin Fitzpatrick of UGO Entertainment praised Appa's "love and courage throughout the series" citing how "our cuddly 8-foot tall buddy [is] willing to face any danger, and overcome any hardship to return to his master."
Leading up to the opening of The Last Airbender, reporter Kofi Outlaw of Screen Rant remarked that Appa "is a fan-favorite of the series." Similarly, Edward Douglas noted in Superhero Hype! that "Two of the characters from the cartoon fans are most anxious to see brought to life aren't even human. They are Appa, Aang's six-legged flying bison, and Momo, his flying pet lemur." The film trailer shown during Super Bowl led UGO Entertainment critic Jordan Hoffman to ask, "Where's Appa?" as the sole complaint, noting the character's lack of prominence in the preview. Correspondingly, MTV's Rick Marshall provided instructions online on "how to find the elusive Appa" for the character's brief appearance in the background of a trailer scene.
As with the rest of the film, Appa's appearance in The Last Airbender was met with largely negative reviews. Geekosystem's Susana Polo found the CGI version of Appa "really quite creepy," noting "that prey animals (like bison) have eyes on the sides of their heads, and so moving them to the front without changing rest of the facial structure tips us right into the Uncanny Valley." With regards to the film's scripting, io9 reviewer Meredith Woerner wrote, "The saddest cut by far was watching Appa and Momo's personalities disappear."
- Booth, John (2010-08-27). "Interview with Dee Bradley Baker". Wired.com. Archived from the original on 27 August 2010. Retrieved August 27, 2010.
- Aerometal - Movie: The Last Airbender
- Bryan Konietzko and Michael Dante DiMartino (2006-09-19). Book 1: Water, Box Set (DVD).
- Director: Anthony Lioi; Writer: John O'Bryan (2005-03-18). "The King of Omashu". Avatar: The Last Airbender. Season 1. Episode 5. Nickelodeon.
- Director: Giancarlo Volpe; Writer: Joshua Hamilton (2006-05-26). "The Chase". Avatar: The Last Airbender. Season 2. Episode 8. Nickelodeon.
- APPA THE FLYING BISON – LAST AIRBENDER MOVIE. Teaser-Trailer.com
- Director: Giancarlo Volpe; Writer: Elizabeth Welch Ehasz (2006-10-12). "Appa's Lost Days". Avatar: The Last Airbender. Season 2. Episode 16. Nickelodeon.
- Director: Lauren MacMullan; Writer: Tim Hedrick (2006-11-03). "Lake Laogai". Avatar: The Last Airbender. Season 2. Episode 17. Nickelodeon.
- Filmography by TV series for Appa (Character) from "Avatar: The Last Airbender" (2005)
- Whitehead, Adam. Avatar: The Last Airbender - Book II: Earth. The Wertzone: SF&F In Print & On Screen. 4 JUNE 2008.
- Director: Lauren MacMullan; Writer: Aaron Ehasz (2005-06-03). "The Storm". Avatar: The Last Airbender. Season 1. Episode 12. Nickelodeon.
- Director: Dave Filoni; Writers: Michael Dante DiMartino, Bryan Konietzko (2005-02-21). "The Boy in the Iceberg". Avatar: The Last Airbender. Season 1. Episode 1. Nickelodeon.
- Director: Giancarlo Volpe; Writer: Ian Wilcox (2005-10-07). "Bato of the Water Tribe". Avatar: The Last Airbender. Season 1. Episode 15. Nickelodeon.
- Director: Giancarlo Volpe; Writer: John O'Bryan (2006-06-14). "The Library". Avatar: The Last Airbender. Season 2. Episode 10. Nickelodeon.
- Director: Giancarlo Volpe; Writer: Michael Dante DiMartino (2007-11-23). "The Day of Black Sun Part 1: The Invasion". Avatar: The Last Airbender. Season 3. Episode 10. Nickelodeon.
- Director: Giancarlo Volpe; Writer: John O'Brien (2007-01-04). "The Firebending Masters". Avatar: The Last Airbender. Season 3. Episode 13. Nickelodeon.
- Director: Giancarlo Volpe; Writer: Elizabeth Welch Ehasz (2008-07-19). "Sozin's Comet". Avatar: The Last Airbender. Season 3. Episode 18-21. Nickelodeon.
- Woerner, Meredith. What the Last Airbender TV series has that the movie doesn't." io9. Jul 2, 2010
- Ditzian, Eric. "'The Last Airbender': An Inside Look At Four Cool Creatures: Visual-effects supervisor Pablo Helman describes the challenges of creating these animated characters.." MTV. Jul 1, 2010.
- Douglas, Edward. "BEHIND THE SCENES OF M. NIGHT SHYAMALAN'S THE LAST AIRBENDER." Superhero Hype! Jun 27th, 2010.
- "Video Game Filmography." Appa (Character). IMDB.
- "Avatar Plug ‘n Play Game." Amazon.
- "Avatar: the Last Airbender – Appa’s New Look." Puppy Bunny Guinea Pretty. Feb 17, 2010.
- "WANT: “Appa and Momo Launcher” Airbender Happy Meal Toy." Great White Snark. June 21, 2010
- "Hughes, Dan G. TV Review – Avatar: The Last Airbender." KidsTelly.com. September 7, 2010
- Fitzpatrick, Kevin. "Flying Bison." Every Insane Animal From Avatar: The Last Airbender. UGO Entertainment. August 12, 2010
- Outlaw, Kofi. "‘Last Airbender’ Hi-Res Image Gallery (Featuring Appa!)". Screen Rant. Jun 24, 2010.
- Marshall, Rick. "See M. Night Shyamalan's 'The Last Airbender' Super Bowl Trailer In High-Def... With Appa The Sky Bison!"
- Polo, Susana. "New Airbender TV Spot: Appa’s Creepy Face." Geekosystem. June 20th, 2010.