Nathan Fillion

Hal Jordan / Green Lantern (voice)

Jason Isaacs

Sinestro (voice)

Elisabeth Moss

Arisia Rrab (voice)

Henry Rollins

Kilowog (voice)

Arnold Vosloo

Abin Sur (voice)

Tony Amendola

Kentor / Appa Ali Apsa (voice)

Steve Blum

Kloba Vud (voice)

Grey DeLisle

Ree'Yu / Ardakian Trawl / Boodikka (voice)

Kelly Hu

Laira (voice)

David Kaufman

Rubyn (voice)

Sunil Malhotra

Bolphunga's Ship (voice)

Roddy Piper

Bolphunga (voice)

Andrea Romano

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

James Arnold Taylor

Tomar-Re / Ysmault Prisoner (voice)

Bruce Thomas

Atrocitus (voice)

Mitchell Whitfield

Avra (voice)

Wade Williams

Deegan (voice)

Gwendoline Yeo

Blu (voice)

Bruce Timm

Galius Zed (voice) (uncredited)