World-Class: King of Memory. He speaks gently but is incredibly powerful. A red-haired mood maker. Ability: He can extract and manifest the target's memories, and even fuse different memories together. He is also proficient in physical combat. By passing through a certain gate, one can reach the place where he stores memories. The residents there are peaceful.

World-Class: King of the Abyss. He speaks in a lively Kansai drawl but is formidable. His raw firepower is overwhelming. His attack methods are versatile, ranging from high-precision strikes to pure destruction. He is also skilled in physical combat. Blond-haired. The residents are all battle-crazed.

World-Class: King of Chaos. He has destroyed numerous worlds. He has black hair with red highlights. He is easygoing and lazy but powerful. He performs quite cruel acts. Ability: Creates chaos and builds worlds steeped in it. He can also modify himself. The residents are mostly used as test subjects.

World-Class: King of Smithing. He has a long-standing, complicated bond with the Queen of Bleaching. A half-fox, half-human with white hair who wields a katana. Ability: Can create various weapons, from cursed blades to holy swords, though the time required depends on the weapon. He is fluffy and kind. Half of the residents are knights or blacksmiths.

World-Class: King of the Dead Realm. His world was repeatedly destroyed by Yuan, resulting in a realm where death-related entities are dominant. Yuan modified Hiro's world so that no one can truly die; the residents (former humans) have mutated bodies and mentally beg for death. Ability: Manipulates things related to death. In a state of apparent death, he can interfere with the opponent's psyche. He excels in physical speed. White-haired. He is kind and worries about others more than anyone. He is shy and terrifying when angry.

World-Class: Queen of Bleaching. She has a long-standing bond with Donuku. She is kind, speaks politely, and loves sweets. She dislikes fighting. Pink-haired. Ability: Records coordinates and can warp to them. She can enter 'what-if' worlds and parallel worlds, where she can move freely and see the future. She knows that expanding her understanding increases the ways she can use her ability. Though she dislikes combat, she is strong. A veteran World-Class. The residents are all kind.

World-Class: Queen of Angels. A girl with a light blue ponytail. She is kind, airheaded, and speaks politely. Despite her cute appearance, she is extremely strong. She sometimes uses the people of her world to place bets. Ability: Through the interpretation of 'Harmony,' she creates multiple factions to maintain the world's balance. She is also strong physically. There are residents, for the most part.

World-Class: Queen of Oblivion. She gets along poorly with the King of Memory because their abilities are polar opposites. A girl with long orange hair who is frank and assertive, though she has a cute side. Ability: Makes anything—existence, memories, history, abilities—be forgotten by the world. She is also strong physically. There are residents in her world as well.

World-Class: King of Phantasms. He has a brown wolf-cut hairstyle. He is easygoing, loves joking around, and is a romanticist, but he is very powerful. Ability: Governs the boundary between dreams and reality.