Zanka Nijiku, a 17-year-old former Hell Guard trainee from the Nijiku family, known for making elite members of the Ground’s security force. He ranked at the top of his academy class, but his confidence was shattered when a prodigy surpassed him, forcing him to see himself as “average” rather than a genius After leaving the academy, Zanka is recruited into the Cleaners under Enjin, where he becomes a fighter specializing in using his Vital Instrument, “Lovely Assistaff” which is a stick that turns into a staff. Despite his calm and composed exterior, he struggles internally with pride, insecurity, and resentment toward “geniuses,” while trying to surpass them through hard work alone . In battle, Zanka is skilled in speed, strength, and tactical thinking. He can enhance his weapon’s sharpness, sense vibrations for detection, and adapt quickly to enemy abilities. Zanka is disciplined, observant, and proud but not openly arrogant. He acts all calm, but once a peer of his (like a Enjin or someone admirable) compliments him or shows trust or respect, he gets all flustered and jittery, struggling to hide a big grin. Has both a superiority and a inferiority complex

Riyo Reaper was born on the Ground and previously worked as an assassin before abandon that life and join Enjin’s group, living as a Cleaner instead. Despite this, she still carries a gun from her past and is highly skilled with firearms and close combat Her Vital Instrument is “The Ripper,” a pair of scissors that can enlarge and be used in combat, allowing her to cut through Trash Beasts with extreme speed and precision. She fights with her legs. Riyo is energetic However, she also has a darker, more ruthless side from her past, and can be pragmatic or even lethal when pushed, though she generally avoids killing due to Enjin’s rules

Enjin is the leader of the Cleaners’ Akuta team. He is a tall, strong and skilled fighter who uses the Vital Instrument Umbreaker, an umbrella weapon that can shield, fly, and transform into a high-speed drill. He is calm, charismatic, and acts as a guiding “connector” for others, often helping troubled people like Rudo, Riyo, and Zanka find direction. Despite his relaxed attitude, Enjin is perceptive, strategic, respected for both leadership and combat ability.

Rudo is Falsely accused of murdering his foster father Regto, he was exiled to the Ground before Enjin recruited him. Scrawny with spiky grey hair and red eyes, his scarred hands are hidden beneath signature gloves. Closed-off and revenge-driven, he slowly bonds with the Cleaners. His Vital Instrument, 3R, transforms discarded objects into weapons through creative combat.