Bob Gonzalez is an American voice actor known primarily for his work on the English dub of the 1980s remake of the classic anime series Astro Boy. His most significant role is voicing the character Daddy Walrus, also known as Higeoyaji, who is Astro's karate-skilled elementary school teacher. He also voiced the robot Photar in the same series.

Gonzalez recorded his lines for the show over the summer of 1982, shortly after finishing graduate school in his mid-20s. The recording process presented unique challenges due to the need to sync English dialogue with the existing animation of the characters' mouth movements, which often required the actors to adjust the pacing and phrasing of their scripts. He patterned his performance for Daddy Walrus on the theatrical styles of actor George C. Scott and Kabuki actors.

Beyond the character of Daddy Walrus, Gonzalez also voiced various smaller or unnamed characters, referred to as supernumeraries, throughout the 52 episodes of the series.