ATV was caught in the safari zone on day nine. It fought especially well against Dragonite in the PKMN League. Nobody really thought much of it until defeating Lance's dragonite.
ATV and Burger King are related. Burger King is the Venomoth King in the Safari Zone. All of his subjects perished on Bloody Sunday.
ATV returned on MT. Silver with the rest of the team in Crystal. He is rivals with Princess Katie. He was defeated by Lazorgator's team.
Pokemon Stadium 2
ATV fought in the stadium alongside Chinchou and Eevee. ATV lost to Onix, and the team lost against the Team of Onix, Weezing, and Master Goldeen.