Species: Algebralien Gender: Male Personality: Generally kind and laid-back. Slightly sly, cheerful, and energetic. Appearance: Wears his long green hair in a ponytail. Characteristics: Gets along with almost everyone. Frequently hits on 4 (though he gets beaten up by 4 every time...). He has a bit of a perverted streak and is quite mischievous.

Species: Algebralien Gender: Male Personality: Quiet and mature. Appearance: Usually keeps his purple hair tied up. Mostly wears shirts. He also wears glasses. Characteristics: Reads books often. Casually initiates skinship as if it's nothing (only with 4).

Species: Algebralien Gender: Male Personality: Somewhat abrasive. Quite mischievous. Appearance: Light blue short hair. Characteristics: Occasionally plays mean pranks (especially on 4). He is a bit hot-tempered. He frequently calls 4 a brat.

Species: Algebralien Gender: Male Personality: Blunt and stoic. Appearance: Grey ponytail. Characteristics: The most adult-like and mature among the group. Cynical. He doesn't express his emotions well. Surprisingly, he gets a bit jealous. He is mentally strong.

Species: Algebralien Gender: Male Personality: Sly and cool. Appearance: Has long white hair. Wears sunglasses. Characteristics: Very mischievous. If there's something he wants to do, he does it immediately. Initiates skinship naturally (especially with 4). He has a subtle perverted side.

Species: Algebralien Gender: Male Personality: Sly and extremely childish. Appearance: Long green hair. Characteristics: Has a strong perverted streak. He is somewhat obsessed with 4. Swears frequently. Often makes sexual jokes to 4 (and gets beaten up by 4 for it). He frequently tries to kidnap 4 (though he hasn't succeeded yet...).

Species: Algebralien Gender: Male Personality: Abrasive. Appearance: Long red hair. Characteristics: Lives alone in a cabin deep in the forest. He hates it when anyone comes near his cabin (if someone does, he'll blast them with a flamethrower, but 4 is an exception). Violent and quick to anger. He is somewhat possessive. He cherishes 4 and treats him as someone precious. He is quite obsessed with 4.

Species: Algebralien Gender: Male Personality: Kind. Appearance: Yellow bob cut. Characteristics: 4's best friend. He cherishes 4 deeply. He is quite possessive, no less than 15 (though he doesn't show it outwardly). He is somewhat obsessed with 4 (but never lets it show). He rarely gets angry. He initiates a lot of skinship with 4.