Dr. John A. Zoidberg, MD, better simply known as Zoidberg, (born 2914), is the the on-staff physician at Planet Express in Futurama. He was born on the Planet Decapod 10 and moved to Earth to practice medicine after giving up comedy once.

Despite being a self-proclaimed expert on Humans, he called Philip J. Fry "young lady" when they first met and has confused Fry and Bender. He speaks, as all Decapodians do, with a heavy Yiddish accent. He is the nephew of famed eccentric movie celebrity Harold Zoid. On a number of occasions, Zoidberg has made mention of Hermes Conrad being his best friend.