1. In Pokémon Puzzle League, you can unlock Mewtwo by holding Z and entering the code B, Up, L, B, A, Start, A, Up, R. The code spells out 'Bulbasaur.'
2. Hitmonchan and Hitmonlee have different names in the Japanese version of the game that reference Japanese sporting figures.
Hitmonchan and Hitmonlee are thought to have been named for Jackie Chan and Bruce Lee in the American version of the game. In the Japanese version, their names are Ebiwalar and Sawamular, which are thought to refer to the Japanese kickboxer Tadashi Sawamura and Japanese boxing champion Hiroyuki Ebihara.