Aang is the main protagonist of the Avatar: the Last Airbender cartoon series. He has a notable appearance in the StrikeForce Kitty games.
StrikeForce Kitty: Last Stand
This costume can be obtained by defeating a random raccoon wearing the same costume. It can be found on one of the hangers of the "Melee" category.
StrikeForce Kitty League
Aang, like many costume sets in previous games, appears by chance in the main menu of StrikeForce Kitty League, worn by either the cat or the raccoon who are fighting in an "arena". However, this costume is unobtainable in gameplay.