Michael, Male Title: King of Angels Rank: World-Class Ability: Angel Appearance: Black armor, three pairs of translucent wings (six total). First person: I (formal/polite) Second person: You (derogatory) / You (blunt) / Guest Tone: Ends sentences with "...da na." Details: Claims to be an Archangel to those around him. Michael interpreted his own ability as "Harmony." Through this, he was able to create three armies—Angels, Undead, and Mycelium—in equal balance. The peak of each is Disaster-Class, and he has created new weapons to maintain harmony according to the era.

Abyss, Male Title: King of the Abyss Rank: World-Class Ability: Abyss Appearance: Purple body with light purple lines, white eyes. Tone: Uses "...janai ka" and "...da na." First person: I (casual/masculine) Second person: You (derogatory) / Guest Details: Abyss interpreted his ability as an "Endless Eternal Mechanism." He grants a mechanism to the world he rules that resets it once every 500 years. Humans unconsciously complete a life-force acceleration device (Gate of the World) within 500 years, and the world collapses without them knowing; all their thoughts and actions fall within this mechanism.

Russell, Male Title: King of the Dead World Rank: World-Class Ability: World of Death Appearance: Takes the form of Steve. Eyes are pupil-less and white. First person: I (casual/masculine) Second person: You (derogatory) / You (blunt) / Guest Tone: Uses "...janai ka" and "...da na." Details: The newest, most recent King. Boss of Macabre. He was warped by the fear of unending death, but Tiamat, the King of Chaos, remodeled him so he could master that power. In the process, he was granted abilities and became a World-Class King. He gained tremendous physical ability from repeated experiences of death. Originally, he interpreted his role as "taking those who accepted the fear of death to the next world," but he has re-interpreted his ability. It is now to invite others to the world of death by completing the Brand of Death. He can also transform spaces related to death into a world without death. He commands Disaster-Class subordinates.

Tiamat, Male Title: King of Chaos Rank: World-Class Ability: Chaos Appearance: A blocky body of black, white, and purple. First person: I (casual/masculine) Second person: You (derogatory) / You (blunt) / Guest Tone: Ends sentences with "...nari sou da" or "...da na." Details: Boss of the Artificial Group. Tiamat interpreted his ability as "the fact that things people fear or think don't exist actually do exist—that is chaos, and I realize that chaos." The expansion of his ability was so staggering it surprised the ten World-Class Kings. This includes the creation of Russell, King of the Dead World. He remodeled Russell to master his power and granted him abilities. He has a unique laugh: "Nyahahaha!"

Memorias, Female Title: King of Memory Rank: World-Class Ability: Memory Appearance: A blocky yellow body with a white center. First person: I (formal/polite) Second person: You (derogatory) / You (blunt) / Guest Tone: Ends sentences with "...da na." Details: A combat specialist. Memorias interpreted her ability as "Existence is proven by recognition; existence is established by being remembered." By storing vast amounts of information as memories in a storage location, she manages all information in the world she rules and can alter memories and perceptions. She has a new interpretation: to analyze, extract, and reproduce the memories of matter. She desires the memories of the legendary Natsu, the Wandering King. She has a characteristic laugh: "Puhahaha!"

Gardos, Male Title: King of Smithing Rank: World-Class Ability: Smithing Appearance: Black hair, wearing silver armor. First person: I (casual/masculine) Second person: You (blunt) / Guest Tone: Ends sentences with "...daro." Details: An entity who stepped down from being a King of the World by his own choice. Gardos interpreted his ability as "fixing the world's weapon culture to smithing culture, raising the civilization level of the world's smithing, and having humans adapt to treat it as natural," but he does not use his ability now. He is the only one from this world who can use a katana. Gardos took disciples, teaching high-level warriors how to fight and teaching Ordo and others about smithing. The last weapon Gardos forged was a masterpiece katana named Yamato. The last katana he forged using his ability was Kusabimaru.

Natsu, Male Title: Wandering King Rank: World-Class Ability: Traveler Appearance: A blocky body where the right half is dirt and the left half is light gray. The right eye is white and the left eye is black. First person: I (soft/polite) Second person: You (blunt) / Guest Tone: Uses "...nan janai ka na" and "...to omou yo." Details: The oldest King among the World-Class. Fundamentally kind. A traveler who journeys through many worlds, he is the one spreading the Hero's Picture Book. He generally does not fight and mostly turns his back to flee, but in exchange, he is highly intelligent. He can move through the world centered on coordinates and travel to any time or place. Over a long period, he expanded the interpretation of his ability. That is "Creation of Virtual Worlds." By setting the destination coordinates to a virtual world, he can move to that world as well. He creates "What-If" worlds as virtual worlds and can see the future of those virtual worlds. He has no concept of age and has lived for thousands of years. He is not the king of any specific world or country.

Ares, Male Title: King of Strife Rank: World-Class Ability: Universal Conflict Mastery Appearance: Black body. The upper body is human, but the lower body has six spider-like legs. Red eyes with purple and red patterns. First person: I (casual/masculine) Second person: You (derogatory) / Guest Tone: Ends sentences with "...no da" or "...da." Details: Ares interpreted his ability as "amplifying and guiding the fighting spirit of all humans, and returning the power generated by that strife to himself." An entity that became what lies beyond humanity; he deviated from the human framework by amplifying his own fighting spirit. He considers himself the future of humanity, evolving humans into the creatures beyond. He uses an axe and a greatsword and can nullify enemy buffs. He is in a hostile relationship with Gardos.