Uxie

Uxie (Japanese: ユクシー Yuxie) is a Psychic-type Legendary Pokémon introduced in Generation IV.

It is not known to evolve into or from any other Pokémon.

Along with Mesprit and Azelf, Uxie is a member of the lake guardians, the Sinnoh region's Psychic-type Legendary Pokémon trio. Uxie is the bringer of knowledge.