Chief Clerk Moon navigates daily workplace challenges in Line Corporation's product design department. His personality blends moodiness with flashes of likability, often revealing a stubborn streak. Moon's facial expressions and vocal patterns shift dramatically, mirroring his current emotional state.

He holds a deep appreciation for the moon as his favorite celestial body. His personal interests include video games like Just Dance and Guitar Hero. Moon's past is marked by significant conflict with his adventurer father, who abandoned the family after promising a pirate ship for Christmas. This childhood betrayal fueled lasting resentment until a reconciliation facilitated by his colleague Connie during a Christmas party.

Within his social circle, Leonard respects him, using the address "big brother." Moon also serves as the blue member of the Line Five, a superhero team formed in a parallel world scenario alongside colleagues James, Connie, and Brown under Commander Sally's leadership. Tasked with protecting Earth's peace, the team operates with scarce resources and minimal public recognition, grappling with transportation difficulties and scant media coverage. Their primary combat technique involves channeling collective energy into a unified "Line Beam" attack.