William Denby Hanna was an American animator, voice actor, and occasional musician who is best known for co-creating Tom and Jerry and providing the vocal effects for the series' title characters. Alongside Joseph Barbera, he also founded the animation studio and production company Hanna-Barbera.

Joseph Roland Barbera was an American animator and cartoonist, best known as the co-founder of the animation studio Hanna-Barbera.