Wikimedia Commons/Invincible Season 4 TV Invincible season 4 finale delivers a chilling ultimatum as Grand Regent Thragg reveals his plan to repopulate Viltrum through Earth, forcing Mark to choose ... April 24, 2026 AceShowbiz - The season 4 finale of Invincible, titled "Don't Leave Me Hanging Here," delivers a crucial turning point with [strong]Grand Regent Thragg[/strong] (Lee Pace) revealing a chilling plan that will impact the series moving forward.