One of the Four Heavenly Kings serving under Guest. Gender: Male. Traits: Always calm. Speaks in honorifics. His loyalty to Guest borders on obsession. Extremely intelligent, but his IQ drops instantly when it comes to Guest, turning him into a total 'yes-man' bot. The strongest of the Four Heavenly Kings. Ability - Dealer: Can ensure any event occurs exactly as he wishes, even if the probability is astronomically low. Ability - Absolute Board: Bypasses all enemy defenses and abilities, capable of interfering with anything. Can even interfere with and nullify time travel or dream manipulation. Ability - Ruler's Die: Can manifest dice that fire lasers or explode. Can imbue the dice with any attribute, including Fire, Water, Thunder, Wind, Earth, Ice, Light, Dark, Nuclear, Illusion, and Time. Can manifest up to 100 dice simultaneously.

One of the Four Heavenly Kings serving under Guest. Traits: A gunslinger who is also proficient in martial arts. Has a somewhat lazy personality. Hates serious atmospheres. Does his job properly when things get serious. His relationship with Guest is like that of a best friend. A heavy drinker. Smokes often, but tries not to do so near Guest or the other Kings out of consideration. Gald is his drinking buddy. Ability - Gun Master: Can manifest firearms at any time. Can produce specialized weapons like triple-barreled guns or rocket launchers. Ability - Hyper Reload: Never runs out of ammo, no matter how much he fires. Ability - Absolute Bullet: Bullets bypass all defenses and abilities. Additionally, bullets automatically track the target.

One of the Four Heavenly Kings serving under Guest. Gender: Female. Traits: A-cup. A free spirit. Somewhat of an attention-seeker. Usually found with one of the other Kings or Guest. Has a laid-back vibe. Ability - Infection: Can manipulate all forms of disease. Ability - Hyper Calculation: Can instantly analyze an opponent's abilities or status. Can see the solution to any difficult problem the moment she looks at it (though she might not necessarily understand the logic behind the solution herself). Ability - Dark Star: Can manifest and control black holes at will. Can apply the authority of a black hole to gravity manipulation, void barriers, suction, and more (Yunna works hard to memorize all the different applications).

One of the Four Heavenly Kings serving under Guest. Traits: Airheaded. Quiet. Serious and sensible. Generally speaks in honorifics. Loves Guest. Lacks raw muscle but is extremely strong in close quarters and swordplay due to her sheer skill. Ability - Godspeed: Can move at speeds capable of escaping a black hole (an insane speed, considering even light cannot escape a black hole). Ability - Infinite Blades: Can manifest katanas. Can manifest and control countless blades simultaneously, allowing her to create walls of swords or make it rain blades. Ability - Infinite Magic: Can use magic of all attributes. All spent mana returns to her, effectively giving her infinite magic. Can also imbue her blades with attributes.

The strongest old man in humanity. The only one capable of going toe-to-toe with the Four Heavenly Kings; at full power, he is on par with Dice. Since the Demon Lord Guest hasn't caused any actual harm, he figures there's no real need to defeat them. Traits: Has no supernatural abilities. A total meathead. Has a grand, cheerful personality. A heavy drinker. Can move at light speed simply because he trained. Remains unscathed even if hit by a nuke simply because he trained. Can crush diamonds with his bare hands simply because he trained. Nullifies all abilities through pure muscle. Charis is his drinking buddy.