List of villains and their voice actors as appearing in Justice League Unlimited.
Villains[]
- Michael York - Ares
- Lex Lang - Atomic Skull and Captain Cold
- George Newbern - Bizarro
- Dee Bradley Baker - Blockbuster
- Corey Burton - Brainiac and The Key
- Donal Gibson - Captain Boomerang
- Sheryl Lee Ralph - Cheetah
- Peter MacNicol - Chronos
- Rachel York - Circe
- Efrain Figueroa and Jose Yenque - Copperhead
- Michael Ironside - Darkseid
- Michael Rosenbaum - Deadshot and Dr. Polaris
- Keith David - Despero
- Michael Beach - Black Manta
- Michael Jai White - Doomsday
- Robert Englund - Felix Faust
- Robin Atkin Downes - Gentleman Ghost
- Jennifer Hale - Giganta and Killer Frost
- Edward Asner - Granny Goodness
- Powers Boothe - Gorilla Grodd
- John Rhys-Davies - Lord Hades
- Mark Hamill - The Trickster
- Michael Dorn - Kalibak
- Clancy Brown - Lex Luthor
- Alexis Denisof - Mirror Master
- Eric Roberts - Mongul
- Olivia d'Abo - Morgaine Le Fey and Star Sapphire
- Juliet Landau - Plastique and Tala
- Stephen McHattie - The Shade
- Kim Mai Guest - Silver Banshee
- Ted Levine - Sinestro
- Bruce Timm - Solomon Grundy
- Bud Cort - Toyman
- Ian Buchanan - Ultra-Humanite
- Phil Morris - Vandal Savage
- Peri Gilpin - Volcana
- Arte Johnson - Virman Vundabar