Nathan Fillion

as Hal Jordan / Green Lantern (voice)

Jason Isaacs

as Sinestro (voice)

Elisabeth Moss

as Arisia Rrab (voice)

Henry Rollins

as Kilowog (voice)

Arnold Vosloo

as Abin Sur (voice)

Tony Amendola

as Kentor / Appa Ali Apsa (voice)

Steve Blum

as Kloba Vud (voice)

Grey DeLisle

as Ree'Yu / Ardakian Trawl / Boodikka (voice)

Kelly Hu

as Laira (voice)

Michael Jackson

as Ganthet (voice)

Peter Jessop

as Salaak (voice)

David Kaufman

as Rubyn (voice)

Sunil Malhotra

as Bolphunga's Ship (voice)

Roddy Piper

as Bolphunga (voice)

Andrea Romano

as Abin Sur's Ring / Deegan's Ring (voice)

Jane Singer

as Wachet (voice)

James Arnold Taylor

as Tomar-Re / Ysmault Prisoner (voice)

Bruce Thomas

as Atrocitus (voice)

Mitchell Whitfield

as Avra (voice)

Wade Williams

as Deegan (voice)

Gwendoline Yeo

as Blu (voice)

Bruce Timm

as Galius Zed (voice) (uncredited)