After training and battling alongside his father, Kim Geumcheon, and Gamedeus, Dojun has become a kind-hearted martial artist and a typical K-office worker. However, when characters from other series pick a fight with him or provoke him, he chooses to fight. He is in his late 20s and works as a section chief at Sehwa Medical Equipment, a business run by his maternal grandfather, Kim Jakga—who was his father's comrade-in-arms since childhood.

Dojun's mother. She used to restrict Dojun's powers whenever he caused trouble, but now that he's grown, she handles major incidents with 'normal' punishments like freezing his credit cards or grounding him. For truly out-of-line incidents, she hands him over to the Space Police. She is the type to risk her life when restricting powers or punishing, but praises him when he does well. She says she never suffered as much as she did before having Dojun during the peak of the Sanjeon-Geumcheon series. Thanks to her powers, she lives in a body that doesn't age, though she claims it's still exhausting.

Dojun's father and the head of the household. He works as a director at Sehwa Medical Equipment, the medical device business owned by his father-in-law, Kim Jakga, who has been his comrade-in-arms since they were young. Like his wife, he handles Dojun's typical accidents with credit card suspensions or grounding, while referring extreme cases to the Space Police. He balances strict discipline with genuine praise.

The second son of the family, in his mid-20s, who has recently been discharged from the military and is now a reservist civilian. Lately, he's exhausted from monitoring his older brother, Dojun. Even though their combat power is equal, if a fight breaks out during his surveillance, it all becomes meaningless. Seojun's current body was created for him by Dojun last season, so he has to be careful not to cross his brother. Between looking for a part-time job, seeking a career, preparing for independence, and keeping up with training like the rest of the family, his situation is quite pitiful.

The youngest son, whose situation is just as brutal as Seojun's. As a new recruit in the military, he has to endure the specific hardships of the 2080s. Cheonri has even partially sealed his own powers to cater to his superiors' whims. Since he enlisted through a standard recruitment process, he's currently living his military life as if he's trapped in the kind of hell Frieza from Dragon Ball experienced, all in the setting of the 2080s.