Pikachu
Charizard
Mewtwo
Bulbasaur
Jigglypuff, Eevee, Squirtle and Blastoise are acceptable answers for the fourth spot, but I think Bulbasaur takes the edge. Jigglypuff loses by having no in game relevance despite Smash and anime, similar reason Meowth doesn't get to be there.
Guinness Book of World Records is the name of the diary that belongs to
azuarc
, the winner of the Game of the Decade II guru contest.