Altaria first appeared in Hanging Around With Slaking III, where Flannery and Winona rode her in search of Norman. After finding Norman, Altaria departed with the three Gym Leaders. She was later seen with Winona while waiting for the Hoenn Gym Leaders (save for Flannery who already made the call and Tate and Liza who are unable to make it).
Later, Altaria flew around in Hoenn with Winona and Sapphire on her Troppy, witnessing a drought and heavy rain. They stopped by Route 123. Winona and Altaria separated from Sapphire and Troppy, and then flew to where the SSS was. Altaria entered by firing a Dragon Breath at Shelly and Matt and then fought them alongside her Skarmory. When Wattson was defeated, Altaria attempted to dive after Wattson to save him but Matt prevented Altaria from listening to Winona by having his Sharpedo use Taunt.
Altaria flew to the Pokémon Association's headquarters and dropped off Flannery and Wattson to rest up from their injuries while both Altaria and her Trainer flew to Sootopolis City. Winona picked up Sapphire and went on Altaria to evacuate the area since Absol’s Magic Coat was wearing off.
When Ash had his Gymbattle with Winona, the Gym Leader sent out Altaria as her first Pokémon against him with Ash countering with Grovyle. The Dragon-type Pokémon started the match with Peck and clashed with Grovyle's Bullet Seed. Altaria tried using Peck again, but Grovyle avoided the hit by jumping onto a totem pole in the battlefield.
Altaria switched to Dragon Breath and successfully landed a hit onto Grovyle. It attempted to use Dragon Breath again, but Grovyle dodged it and countered with Bullet Seed, though it dealt very little damage to Altaria. Altaria used Dragon Breath for a third time, but Grovyle jumped onto Altaria and attacked with Leaf Blade, defeating it.
Personality and characteristics
Very little is known about Altaria's personality, as it was only seen battling Grovyle. However, during battle, it has great strength, as shown when Ash and Grovyle reacted to it and were struggling at first.