D'oh! This article is a stub. You can help the wiki by embiggening it. Springfield Penitentiary. He is a cellmate of Snake Jailbird. His uniform number is "5F06," which is the production code for "Realty Bites"; the gate to his mansion is sold off at a police auction in that episode. Appearances Episode – "Realty Bites" Retrieved from "https://simpsons.fandom.com/wiki/Johnny_D?oldid=800808" Categories: Male characters Alive characters Stubs Characters One-Time Characters Prisoners Season 9 first appearances Criminals Villains Community content is available under CC-BY-SA unless otherwise noted.