Wikimedia Commons/Invincible TV show TV Invincible fans react to Thragg's season 4 debut: mixed reviews over Lee Pace's voice and design compared to the comics. May 2, 2026 AceShowbiz - Invincible fans have been eagerly anticipating the arrival of Thragg, the powerful Viltrumite king and major antagonist from the comics. With the release of the show's fourth season, viewers finally saw Thragg's animated debut, and longtime followers of the Image/Skybound series were excited to witness his significant impact on Mark Grayson's journey.