Mario uses their power to battle Super Dimentio, who upon defeat splits back into Luigi, the Chaos Heart, and Dimentio who dies before the Chaos Heart causes The Void to expand uncontrollably.
Mario uses their power to battle Super Dimentio, who upon defeat splits back into Luigi. Mario uses their power to battle Super Dimentio, who upon defeat splits back into the Chaos Heart. Mario uses their power to battle Super Dimentio, who upon defeat splits back into Dimentio. This Dimentio dies. The Chaos Heart causes The Void to expand uncontrollably.