Maruten operates as a Galactic Police Officer, partnering with bounty hunters A-ko and B-ko on their mission to rescue C-ko from space pirates commanded by Gail. His small stature is consistently emphasized through descriptions like "pint-sized" or "miniature."

He exhibits a pragmatic approach to duty, initially prioritizing Gail's capture over rescuing stranded survivors during a space battle. However, his resolve falters when he sees C-ko's attractive nanny on a viewscreen, prompting him to authorize a rescue mission he previously opposed. This act reveals his hypocrisy, earning criticism from A-ko.

Maruten utilizes advanced technology, piloting a spacecraft equipped with hyperspatial bypasses instead of warp drives. He asserts these bypasses are safer and more efficient, touting his people's technological superiority. Challenged about safety during a high-speed pursuit, he recalls his kindergarten ambition to become a racer, suggesting a confident and potentially reckless piloting style.

His interactions with A-ko involve misinterpretations. When proposing a deal for her assistance, A-ko mistakenly believes he demands her body as payment, envisioning humiliation. Maruten clarifies this misunderstanding, expressing dismay at the assumption while staying focused on the mission.

Following the successful defeat of Gail's plan to resurrect the sorceress Xena, Maruten claims full credit for saving the universe. This action denies A-ko and B-ko any recognition or financial reward, underscoring his self-serving nature. He achieves personal acclaim while the protagonists return to their impoverished state.