This page is about something created by fans. It is not an official subject.
Bulbapedia is a fan-made wiki about the Pokémon series. It is named after the grass-type starter Pokemon, Bulbasaur. It has many articles about Pokémon types, games, characters, locations, the TCG, and more. It is a member of the Nintendo Independent Wiki Alliance and currently has over 35,000 Pokémon-related articles.
Bulbapedia is part of a much larger website known as Bulbagarden, which not only has the wiki, but also has news, discussion forums and live chats. There is also a gallery where users can post their fan art.