The Collector took King as his personal playmate while turning most of the Boiling Isles' residents into puppets. King tries to reason with the Collector upon realizing he is essentially a lonely, misguided child, but Belos, barely alive and possessing Raine’s puppet body, convinces the Collector that King is conspiring with Luz and her friends against him. After placing Luz, Eda and King in several dream scenarios and games, the Collector is disheartened with their resistance and reveals his full story to the trio. Showing sympathy, they take him on a tour of the Boiling Isles to the sites of past adventures so they can help him understand true friendship. When Belos possesses the Titan's heart and infects the Boiling Isles, Luz sacrifices her life to save the Collector, who becomes remorseful while realizing the fragility and value of life. After Luz is restored to life by a repentant Titan, the Collector helps keep her friends and the Archive House safe, and is shown gratitude by Amity once Belos is defeated and destroyed. Restoring everyone under his spell, the Collector decides to return to the stars to do some "growing up", but is encouraged by King to revisit everyone in the future. He also creates a permanent portal between the Human and Demon Realms for Luz, and returns to put on a light show for Luz’s "King-ceañera" party.
