Happy (one day early) Moon Festival!!
Cresselia, the Lunar Pokémon. Shining particles are released from Cresselia’s wings like a veil, and it is said to represent the crescent moon.
– Dawn’s Pokedex
I often forget about Cresselia when thinking about legendaries, probably because there’s too many of them in Gen IV (and too many Psychic type legendaries). She is considered the opposite of Darkrai, or even a counter to it, because her feathers are used to keep Darkrai’s nightmares away (even though in the game, Cresselia can be affected by the move Nightmare, and Darkrai’s Bad Dreams ability). Her hands looks like they’re clasped in prayer
Cresselia is one of the few legendaries that have a gender, being always female, probably because of the feminine symbolism with the moon. She’s a roaming legendary, and I don’t think I’ve ever bothered to catch her.
Stat-wise, it has very good Defenses and HP, but not much is left for offensive stats or Speed. Its Attack, Sp Attack, and Speed are not terrible, since she has high total base stat, but compared to other legendaries, she doesn’t do as well as an offensive Pokemon.