Inicincible creator Robert Kirkman has stated that fans are finally getting what they've been asking for in season 4 of the show for three seasons, with the introduction of Thragg, the Grand Regent of the Viltrum Empire, who is voiced by Lee Pace and represents a threat similar to Thanos. The show's Vythramite subplot, which was largely put on ice after Nolan left planet Earth at the end of season 1, has been a long time coming, according to Kirkman and co-showrunners Simon Racioppa. The casting of Pace, who played another intergalactic villain in the MCU, was the only choice for the role. The season 4 episode of Invincible is set to premiere on Prime Video from March 18.