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-Griffin
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)