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)

Michael Jackson

Ganthet (voice)

Peter Jessop

Salaak (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)

Jane Singer

Wachet (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)