He also illustrated the "Hama-chan's Slowking" TCG promo card produced for the Japanese release of Phantom Pokémon Lugia's Explosive Birth.
Hamada is primarily known as one-half of the popular owarai duo Downtown. In a 1999 episode of Downtown's Hey! Hey! Hey! Music Champ TV series, Hamada made fun of the Iron Chef persona of fellow Movie 2 voice actor Takeshi Kaga.