Pkmn:Legendary Bird Trio

Legendary Bird Trio are, as the name implies, three Legendary bird Pokémon. They first appeared in / Pokémon Mystery Dungeon: Red and Blue Rescue Team as bosses during the main story, and can be fought again and recruited after clearing the credits. A story event will play out involving the birds at Legendary Island, where they'll create a Vortex Stone that allows the Hero to enter Silver Trench and battle Lugia.

Articuno

Articuno (Japanese: フリーザー, Freezer) is the first of the legendary birds, and the third to be fought. Articuno is an Ice-type and Flying-type Pokémon.

Moltres

Moltres (Japanese: ファイヤー, Fire) is the third legendary bird, and the second to be fought. Moltres is a Fire-type and Flying-type Pokémon.

Zapdos

Zapdos (Japanese: サンダー, Thunder) is the second legendary bird, and the first to be fought. Zapdis is an Electric-type and Flying-type Pokémon.