IGN: Luffyking
Answer 1 : Along with Uxie and Azelf, Mesprit is a member of the lake guardians, the Sinnoh region's Psychic-type Legendary Pokémon trio. Mesprit is the bringer of emotion.
Answer 2 : Mesprit, Uxie, Azelf. Plays an important role in Sinnoh mythology. Embodies knowledge, emotion, and willpower respectively. Created by Arceus. They have the power to tame the Creation trio.