Fans of Invincible have expressed disappointment with the controversial Hell storyline introduced in season 4, particularly in episode 4, titled 'Hurm.' This episode, which features Damien Darkblood summoning Mark to assist Satan, was poorly received, earning a 6.5 rating on IMDb. Critics argue that it disrupted the momentum of the Viltrumite War narrative, which is central to the series. However, the showrunners are determined to continue this storyline into season 5, as it sets up important future developments, including a cliffhanger involving the character Volcanikka. The Hell episode, while criticized, provided valuable world-building by revealing the history of Hell and its connection to Earth. The creators believe that integrating more characters and established lore can help justify this storyline and maintain its relevance. As season 5 approaches, fans are left wondering how these narratives will intertwine and whether the Hell storyline can redeem itself in the eyes of viewers.