John DiMaggio (b. September 4, 1968) has voiced a multitude of roles including:
- Tarmack for the animated series Static Shock
- Brother Blood for the animated series Teen Titans
- Kilowog for the episode "The Green Loontern" of the animated series Duck Dodgers
- Rhino and Mugsy for the animated series The Batman
- Dreamslayer and Lord Havok for the animated series Justice League Unlimited
- Bizarro for the video game Superman Returns
- Toyman for the animated film Superman: Doomsday
- Gorilla Grodd, Aquaman, Enemy Ace, Ubu, Faceless Hunter, Black Adam, Black Mask, Tattoo, King Tut, Toyman, Vigilante, Legionary, Mister Freeze, Captain Boomerang, and Hellgrammite for the animated series Batman: The Brave and the Bold
- Deimos for the animated film Wonder Woman
- Joker for the animated film Batman: Under the Red Hood
- Samson and Ultrasphinx for the animated film All-Star Superman
- Rough Cut for the animated film DC Showcase: Catwoman
- Kothak for the animated series Green Lantern: The Animated Series
- King Shark and Bane in the animated movie Batman: Assault on Arkham.
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