From Bulbapedia, the community-driven Pokémon encyclopedia.
Happy Mask Man is a Pokémon fan who tries to assure that Bulbapedia appreciates things that go unnoticed. He is a trivia enthusiast, and tries to make sure that the facts of different continuities to not get jumbled with each other. His main focus would be the video games and the trading card game. He is trying to help Project TCG in its great revival, and is working on a better format for articles on cards. Another project of his is putting together matters of Pokémon Card GB and its sequel. He's not too good at making articles, but he can put the information together.
Happy Mask Man is also a big fan of Mr. Fuji.