Altaria is Susie Derkins's third Pokémon she has caught prior to Sayaka's Very First Pokemon! and debuted as a Swablu, She is Susie's sentry Flying-type according to Susie Derkins.
In Flying To A Double Evolution!, She evolved into Altaria to rescue Calvin's Growlithe from falling to its death, and rescued him in the nick of time by making him land on Altaria's fluffy wings.
Altaria's known moves are: Dragon Pulse, Steel Wing, Moonblast, Attract and her ability is Natural Cure. As Mega Altaria, her ability is Pixilate.