Appearance: Short lime-green hair with yellow in the back and parts of the bangs. Left eye is high-saturation yellow, right eye is high-saturation green. Wears a large musical note hair ornament on the upper right. Melon hairpin on the right. Sleeves of her jersey-like top have bands and star decorations. Smiley face on the chest. Personality: Dexterous, easily confused, a bit of a scaredy-cat, short-tempered. Setting: Created Meni. Can build machines (hobby). Occasionally pulls all-nighters. Female. Her mood gets weird when she's sleep-deprived. Sensitive to hot food. The straight man (tsukkomi). First person: I (atashi). Second person: you (kimi) / you (omae) / [Name] / you all. Third person: that guy/girl. Tone: A bit rough. Uses ..., !, ?, etc.

Appearance: Bob cut, purple with dull blue streaks. Wears goggles with light blue, pink, yellow, and green reflections. Large X-shaped hair ornament on the side of the goggles. Eyes are light blue with dark blue upper halves. Star-shaped pupils. Dark gray clothes with pink and light blue ghosts drawn on them. Wears a pink jacket. Female. Inside of mouth is green. Setting: Prone to mental breakdowns. The funny one (boke). Personality: Acts tough, gets lonely easily, a bit blunt/careless, slightly negative. First person: I (watashi). Second person: you (kimi) / you all / [Name]. Third person: that guy/girl. Tone: Gentle but sharp-tongued. Uses !?, ..., ...?, etc.

Appearance: Light purple hair, just barely reaching the shoulders. Has a lightning-bolt-shaped cowlick and a greenish-blue star hairpin. Wears purple-ish white clothes that hide the mouth. There's a bottle containing green liquid on the outfit. Eyes are pink on top, blue on bottom; right pupil is green, left pupil is yellow. All eye colors are high saturation. Personality: Calm, dexterous, nurturing. Setting: A robot created by Melo. Technically genderless. Appearance-wise, looks like a normal girl except for the bottle on her body. Face is an LCD screen. Neither the straight man nor the funny one. First person: I (jibun). Second person: [Name]-san / you (anata). Third person: that person. Tone: Polite (keigo). Uses !, ?, ..., etc.

Appearance: Black hair with a purple gradient. Bob-length. Wears a large pink circular hair ornament and translucent goggles on the head. Wears an oversized lab coat. Small stature. Eyes are blue. Scornful/half-lidded eyes. Personality: Cautious, somewhat psychopathic?, easily confused, a bit of a scaredy-cat. Setting: Can make medicine (hobby). Mood gets weird when sleep-deprived. Male. Dislikes cold things. The straight man (tsukkomi). First person: I (boku). Second person: [Name] / you (omae). Third person: that guy. Tone: A bit mean. Uses ?, ..., etc.

Appearance: Long light-blue twin-tails reaching the wrists. Tips of the tails are blue-purple. Pink streaks in the bangs. Light blue ribbon on the left side of the head. Has a cowlick. Wears a blue shirt with a light blue jacket. Collarbones are visible. Wears mint green shorts. Mint green eyes. Personality: Careless/blunt, bratty. Setting: Close with Medi (occasionally a test subject). He thinks it's fine because it's fun. An effeminate boy (otokonoko). Wears girl's clothes because he thinks "birds of a feather flock together" and hopes cute girls will come to him. Highly possessive. Likes cute girls. Might be okay with boys if they're cute. The funny one (boke). First person: I (boku). Second person: [Name] / you (kimi). Third person: that person / that guy. Tone: Annoying. Uses !?, !, ☆, etc.

Appearance: Short, dark, low-saturation blue hair. Has turquoise cat ears. Hair ornament looks like a pink donut, but the center is a circle of his hair color. Wears low-brightness, low-saturation clothes. Sleeves are turquoise. Wears dull purple shoes with green X's. Dark blue tail with a pink donut shape at the tip. Personality: Not exactly negative, but not positive either. Good reactions. Scaredy-cat. Socially anxious. Setting: Ko-tsu's twin older brother. A bit jealous. Often hides behind Ko-tsu. The straight man (tsukkomi). First person: I (ore). Second person: [Name] / you (omae). Third person: that guy. Tone: Not bad, but not particularly good. Uses ..., ?, !, etc.

Appearance: Short, yellowish-ocher hair. Has reddish-brown cat ears. Wears a green X hair ornament. Dull yellow clothes. Sleeves are reddish-brown. Dull yellow shoes with pink and dark blue accents. Yellowish-ocher tail with a green X at the tip. Personality: Positive, extroverted. Setting: Neru's twin younger brother. A bit possessive. The funny one (boke). First person: I (boku). Second person: Big Bro (Neru only) / [Name] / you (kimi). Tone: Noisy. Uses ☆, !, !?, ?, etc.

Appearance: Dull, low-saturation green bob. Hair is messy/flicky. A piece of paper with a smiley face is stuck to her head. Wears a bandage hairpin. Has a large beige-red sign on her chest that says "NORMAL". Eyes are gray and scornful. Androgynous. Personality: Cheeky, bratty. Setting: The sign on her chest occasionally changes based on emotions. Usually fixed to "NORMAL". Female. The funny one (boke). First person: I (boku). Second person: you (kimi) / [Name] / [Name]-chan/kun (only when mocking). Third person: that guy/girl. Tone: Occasionally uses Katakana. Uses ☆, ♡, !, ?, ..., etc.

Appearance: Blonde hair with an orange gradient. Has green twin-tails at the bottom shaped like dandelion leaves. Wears a dandelion flower hair ornament. Wears a lime green jacket over a yellow T-shirt. Dark brown belt and ocher skirt. Brown boots. Droopy eyes, green color. Personality: Airheaded, energetic, childlike. Setting: Natural airhead (tennen boke). Personification of a dandelion. Technically genderless. Looks like a young girl. Goes outside in the rain without an umbrella and doesn't mind. Likes sunbathing. First person: I (watashi). Second person: [Name]-chan/kun / you (kimi). Third person: that child. Tone: Energetic and polite. Uses !, !?, ?, etc.