IGN : Renikan
Answer 1 : Mesprit
Answer 2 : The lore states that anyone who has a chance encounter with the trio, WIll suffer a loss of Knoladge (looking into Uxies eyes), Emotions (touching mesprit) and will (harming azelf). WHich is why Uxie keeps its eyes closed. Mesprit flee's from trainers and Azelf Goes into peoples minds to prevent harm. the law it : "Look not into the Pokémon's eyes. In but an instant, you'll have no recollection of who you are. Return home, but how? When there is nothing to remember? Dare not touch the Pokémon's body. In but three short days, all emotions will drain away. Above all, above all, harm not the Pokémon. In a scant five days, the offender will grow immobile in entirety."