Melissa Benoist Teela (voice) Liam Cunningham Duncan (voice) Keith David Hordak (voice) Mark Hamill Skeletek / Skeletor / Skele-Titan (voice) Lena Headey Evil-Lyn (voice) Griffin Newman Orko / Tuvar (voice) William Shatner Keldor (voice) Tiffany Smith Andra / Man-At-Arms (voice) Chris Wood Adam / He-Man (voice) Meg Foster Motherboard (voice) Stephen Root Cringer (voice) Gates McFadden Queen Marlena (voice)