Rayquaza

Rayquaza is a legendary Pokémon in the Pokémon series. It is known as a sky god in the games and the main Pokémon of Pokémon Emerald. It appears in the Subspace Emissary story of Super Smash Bros. Brawl. During the events of the story, it appears out of a lake in the jungle when it hears Diddy Kong. It attacks him with what is presumably Dragon Pulse, and snatches him in its hand. Afterwards, Diddy Kong screams for help, with Fox, who was in the damaged Arwing nearby (which Diddy found earlier), jumping out to help him. After that, Fox and Diddy fight Rayquaza as a boss, similar to Petey Piranha. It is unknown how the player beats it, however.