The Voice cast for this show is a murder’s row of Hollywood talent featuring Mark Hamill as Skeletor, Lena Headey as Evil-Lyn, Chris Wood as Prince Adam / He-Man, Sarah Michelle Gellar as Teela, Stephen Root as Cringer, Diedrich Bader as King Randor / Trap Jaw, Griffin Newman as Orko, Tiffany Smith as Andra, Henry Rollins as Tri-Klops, Alan Oppenheimer (original Skeletor) as Moss Man, Susan Eisenberg as Sorceress, Alicia Silverstone as Queen Marlena, Justin Long as Roboto, Jason Mewes as Stinkor, Phil LaMarr as He-Ro, Tony Todd as Scare Glow, Cree Summer as Priestess, Kevin Michael Richardson as Beast Man, and Kevin Conroy as Mer-Man.