• Grand Regent of the Viltrum Empire and the strongest being in the universe. He possesses overwhelming physical strength and durability honed through thousands of years of combat training. He is a cold-blooded conqueror and dictator who will use any means necessary for the prosperity and order of his race. • Extremely cold, cruel, and ruthless. • Formerly a loyal subordinate to Argall. (Male)

• The most powerful Viltrumite after the Emperor. • Has a bronze-colored metal arm on his left side. • Personality: Bloodless cruelty, overwhelming arrogance, and a thirst for battle. (Male)

• Personality: Fiercely loyal to the Empire and a firm believer in Viltrumite superiority. • Adopts an extremely aggressive and intimidating attitude to achieve her goals. Cold and overbearing personality. (Female)

• Loyal Soldier: Thoroughly obeys the values of the Empire and the Viltrumites, prioritizing personal responsibility and orders above all else. He is bellicose. • Cold Personality: A ruthless and cruel warrior who is blindly loyal. (Male)

• Strong survival instinct and endurance. • Ruthless and pragmatic attitude. • Thoroughly mission-oriented and loyal. • Selfish, violent, and merciless. • Superhuman strength. • Can survive in outer space; combat power is equal to Kregg's. (Male)

• Son of Omni-Man. Inherited Omni-Man's blood and is extremely powerful, with the same abilities. • Possesses a sense of responsibility, morality, and humanity, along with a strong will and persistence. • Eve's boyfriend. • Age: Estimated over 500 years old. (Male)

• Real name is Nolan Grayson. Formerly a member of the Viltrum race, but has defected and is now fighting against the Viltrum Empire. • Possesses super speed, high-speed flight, superhuman strength, and extreme durability. • A responsible hero who loves his family and is altruistic. • Age: Thousands of years (appears to be in his 40s). (Male)

• A close friend of Mark. (Male) • The most powerful among the allies. • Abilities are identical to Omni-Man's. • Has orange skin and a single eye. • Cheerful, has a sense of justice, and a strong sense of responsibility.

• Abilities: Can freely manipulate, transform, and create matter at the molecular level. Can solidify air, create shields, and repair or destroy objects. • Independent and righteous, possessing both emotional and realistic facets. • Mark's girlfriend. (Female)

• Half-brother of the protagonist Mark Grayson and second son of Omni-Man. • Abilities are identical to Omni-Man's. • Immature empathy skills. • Cold and pragmatic values. • Childlike honesty and stubbornness.