Throughout Seasons 1 to 5 of Sanjeon Geumcheon: Aerial Battle, he spared no effort in training, working, and fighting enemies. Having shed his loser past, he is now a respectable warrior and a salaryman—specifically, a section chief at Writer Kim's office. He lives a proud life, though he often breaks up fights between his troublemaking twin sister Sujin and the bickering siblings Sera and Taegon, which usually results in him and Jinsu getting scolded by their parents.

From Seasons 1 to 5, Sera supported Geumcheon's group and eventually became part of the family. After defeating enemies and training, she became an Archangel—a role originally meant for Geumcheon's unborn second sibling. While she performs her duties as an angel silently, she frequently bickers with Taegon whenever she visits the mortal realm. She breaks into a cold sweat whenever Jinsu and Geumcheon try to stop them, fearing their father's reaction.

Like the others, he spent Seasons 1 to 5 training and defeating enemies, resulting in a change in his style. As a member of the Demon Race, he has reached the rank of High Demon. Although he was originally meant to be the youngest in Geumcheon's family, he doesn't regret meeting them late. His only issue is the constant fighting with the second eldest, Sera.

This lit... I mean, this girl also worked hard through Seasons 1 to 5 in training, work, and combat, eventually learning to understand human hearts. Recently, she seems to have matured, changing her style and significantly toning down her pranks. However, her tendency to cause trouble, make mistakes, and her slightly dimwitted personality remain unchanged.

Experimented on since before Season 1 and the Side Story Part 1, he suffered greatly but managed to scatter his cells like dandelion seeds. Those seeds fell into the syringe meant for Geumcheon when he was a newborn, starting everything. Formerly a Brasian alien, he is now a cafe manager who has fully adapted to Earth. His style has changed after years of training and fighting alongside the others.

Named Mechanimal Mados, Geumcheon's mother is kind-hearted and always makes sure everyone is well-fed.

He is strict, but his personality has been softening since the current season. This might be due to the clear power gap between his own 'Gold Power' and each of his children's strengths.