Birthday: 13 January 1910, Worthington, Indiana, USA
Birth Name: Winfield B. Mercer
His parents were actors, but Jack decided to pursue his love of art. He got a job as an inbetweener (rookie animator) at the Fleischer studio. Dave Fleischer happened to hear him singing the Popeye theme song in a funny voice, and asked Jack to try voicing one cartoon. He later became a writer at the Fleischer studio.