Male Guardian: Phoenix Weapons: Fire Shield, Fire Sword The leader of the Space Cops and the strongest among them. He is a character who always sticks to principles. He has excellent defensive capabilities and excels at close-range combat, but his weaknesses include a lack of flexibility and weak long-range attacks. He was so inflexible at first that he was extremely wary of the human boy Kai and even his own Guardian, Phoenix. However, as he adapts to life on Earth, Red One gradually develops more flexibility and occasionally befriends humans. Of course, his inflexible behavior hasn't been completely cured. He is characterized by a red body, yellow sclera, and blue irises.

Male Guardian: Puma Weapons: Black Fist, Lion Shuriken The stoic second-in-command of the Space Cops. He is the strongest after Red One and specializes in patrolling. He is good at both long-range and close-range attacks, but he has a naive side and occasionally gets tricked. He is characterized by a navy body, light blue sclera, and dark blue irises.

Male Guardian: Rhino Weapon: Rhino Batchew The largest member of the Space Cops. Usually a pacifist, he immediately flips into a berserk state if his food is disturbed or if Sep threatens people. He is characterized by a yellow body, green sclera, and light blue irises.

Female Guardian: Reindeer Weapons: Pink Arrow, Arrow Cuff The only female agent and the sole lady of the Space Cops. She possesses self-love and a bit of a 'princess complex,' but she is also sensitive and takes good care of her colleagues. Her drawbacks are weak close-range combat and being weaker than the other members, though she is stronger than Jooni Bool. She is characterized by a light pink body, light pink sclera, and light blue irises.

Female Guardian: Cobra Weapon: Arch-Blue Jockey-Blue Cobra Blade The very young youngest member of the Space Cops. As mischievous and playful as she is, she is the mood maker who brightens the atmosphere and fights using her wits and clever tricks. However, being the young youngest, she is the weakest in the Space Cops and struggles in terms of raw power. She is ranked last in strength. She is characterized by a blue body, light purple sclera, and light blue irises.

Male Vehicle: Auto-sorting Kickboard A human boy who loves dinosaurs. He currently lives with his aunt, who is a camera journalist. Because he is timid and lacks athletic coordination, he is sometimes targeted by bullies. He used to live with his archaeologist parents, but they suddenly disappeared under mysterious circumstances. Driven by a strong sense of adventure, he sets out to find his parents himself and often visits dinosaur excavation sites. One day, he happens to meet the Space Cops at an excavation site, becomes their friend, and provides them with various information about Earth.

Female Kai's aunt. She works as a camera journalist and often gets headaches because of her nephew Kai and his friends, the Space Cops members (Red One, Black Fun, Gold Rock, Pink Chu, and Jooni Bool).