Miguel Ferrer

Deathstroke (voice)

Self

FBI Agent Albert Rosenfield

Vice President Rodriguez

Delgado (voice)

Mr. Capo

L-1

Jefé

Vincent

Assistant Director Owen Granger, Owen Granger

Jack McManus

Silvio Manfredi / Silvermane (voice), Silvermane (voice)

J'onn J'onzz / Martian Manhunter (voice)

Amador

Mr. Parker

Jonas Bledsoe

Fred Collins Boyd

Agent Hopkins (voice)

Cliff Castleton

Colonel Garret

Sinestro (voice)

Garrett Macy

Eduardo Ruiz

Tarakudo / Shadowkhan King (voice)

Antaeus (voice)

Shan-Yu (voice)

Director of Hatcheries and Conditioning

Dr. Eno / The Weather Man

Ortega Peru

Felix Valdez

Mark Torrance (uncredited)

Dr. Daniel Critchley

Dexter Moyers

Thomas Manning

Lloyd Henreid

Tony Castellano

Kaufman

Buddy Budwaller

Albert Rosenfeld

Snyder

First Officer

Roget

Mitch Bruckner, Hitman (uncredited), Gary