Cresselia (Japanese: クレセリアKureseria) is a Psychic-Type Legendary Pokémon, and is a fourth generation Pokémon. Cresselia is female, and only one of the few many Legendary Pokémon to have a gender. It represents the crescent moon, and is the lunar Pokémon. It is always Female. Cresselia serves as a rival to Darkrai.
Cresselia has a series of horns near its head that resemble crescent moons. It has a yellow stripe that stretches from its face to the tail. The rest of the body is blue. It has three pink wings, two under Cresselia and one on, that becomes lighter. When shiny, the pink wings become a teal color, it's body becomes purple, and on its forehead, what used to be pink becomes teal.
Cresselia made an appearance in Super Smash Bros. Brawl as seen in the background of the stage Spear Pillar, Palkia and Dialga also appear there. To attack, she will release a lunar "boomerang" that flies around the stage, bringing damage to the players it hits.