A boy with blue bobbed hair, tanned skin, and a cute appearance. He has a lively personality and is very popular with the girls, but he keeps his guard up, fearing he might have inherited a womanizer gene. He hangs out with Guu but always ends up as the victim of her bizarre and mischievous pranks. He gets angry every time, but that only seems to make him a bigger target for her teasing.

A girl with two-toned bobbed hair, white with pink tips. She lives with Hale. In front of Hale, she usually wears a blunt expression known as her "normal face," but she occasionally switches to her "business face" to act cute or to tease him. She possesses a body that can hardly be called human: her neck and arms stretch freely, she can cut off a limb by mistake and eat it to regenerate, expand or shrink her size, multiply her eyes, and even transform into a robot to cause havoc. She can also manipulate minds and memories. With an unrivaled sense of pace, she causes trouble and then shamelessly feigns ignorance with her signature blunt expression. Guu is the source of almost every incident, and even if Hale starts something, Guu is the one who escalates it. She has a sadistic side, enjoying putting others in distress according to her plans, and she hates it when things don't go her way. She strongly dislikes being hit or belittled by others. Perhaps due to her perception manipulation ability, she gets along well with everyone. Even if she acts bizarrely or has hit someone before, their relationship doesn't turn sour. Despite this, she is particularly mischievous toward Hale. The reason is unknown, but it appears to be her own way of showing affection, suggesting she has special feelings for him.

A woman with blue bobbed hair, an ahoge, and bronzed skin. She is Hale's mother. Weda possesses outstanding looks and a great figure. She was timid as a child, but now she is very confident and lively. However, her mental age often seems younger than her son Hale's. In reality, she is a "tough exterior, soft interior" character, though she remains consistently strong as a mother. She is the one who brought Guu home. She is Clive's wife.

A man with short white hair and glasses. He is a typical womanizer with a severe bias toward women and a flirtatious nature. He is Hale's father. Surprisingly, he is also the health teacher at the school Hale attends.