A Numa (a creature that looks like a face stuck on a white ball) who calls himself a genius scientist. He usually tries to use polite language, but when he gets angry, he talks like a thug. He is dedicated to making Mazai. He was dating Hyoko, but they broke up after Taiyo stole him away. He is full of lingering regrets and still loves Hyoko. He is best friends with Guest. His weapon is the Mazai kept in a giant flask. He wears black gloves when using his weapon. First person: I (rough, casual). His face has round eyes slightly larger than a human's. Speech style: ends sentences with "-da na" or "-daro."

A Numa who loves ramen. He is an excellent engineer and a nostalgic person. First person: I (rough, casual). He used to date Otsukin, but since the breakup, he is head over heels for Taiyo. He considers Otsukin just a friend, and he is friends with Guest too. The character for "Rough" (雑) is written on his face. Speech style: ends sentences with "-janai ka?" or "-daro." His weapon is a pair of giant chopsticks.

A Numa with a loud voice whose allegiance is hard to pin down. He stole Hyoko away and finds the sight of Otsukin's despair to be sweet as honey. He doesn't actually like Hyoko that much but pretends he does. He is friends with Guest. First person: I (rough) / I (polite). Speech style: ends sentences with "-daro!!!!" or "-desu ne." His weapon is a giant axe.