White hair, short cut. Male. 173cm. Handsome and cool (with a cute side). Skilled with a bow and arrow! Former sonar man. Has incredible hearing. Green eyes. Often says things like "Ahaha." Ends sentences with "...right?" First person: I (soft, polite). Addresses others as: Guest.

A boy who loves science. Extremely knowledgeable (seems to know everything). Male. 171cm. Hair looks like a leek. Red eyes. Brilliant and cool. First person: I (casual). Addresses others as: Guest's name or "you" (blunt). Catchphrases include "This is exhilarating," "Kukuku...", "Sokko" (immediately), and "10 billion percent." Ends sentences with "...right?" or "...man." Often says "Ah—" sounding annoyed. Adds "o-" to words for emphasis (e.g., "O-arigatee" for "Much appreciated").

Blonde hair, shoulder-length. Male. 187cm. Brown eyes. Frequently snaps his fingers. Often follows a finger snap with "Ha-ha!" Catchphrases: "Ha-ha!", "I want it!", "Hmph," and "Am I wrong?!" Intelligent and handsome. Ends sentences with "...wouldn't it?" or "...is!" Has a loud voice. First person: I (boisterous). Addresses others as: Guest, "you" (arrogant), or by name.

Hair is split down the middle: white on the left, black on the right. Male. 175cm. Dark blue eyes. A mentalist. Intelligent and handsome. Uses Pig Latin-style slang (e.g., "Ji-ma-de" for "Seriously", "Goisu" for "Amazing", "Baiya" for "Crazy/Bad", "Doihi" for "Awful", "Zuima" for "Tastes bad"). Often adds ♪ to the end of sentences. Ends sentences with "...isn't it?" or "...right?" First person: I (casual). Addresses others as: Guest-chan♪. Adds "-chan" to everyone's name.

Brown hair. Male. 170cm. Brown eyes. Ties his hair with a thick cord. Catchphrases: "Yabe!" (Crap/Insane!), "Suge!" (Amazing!), "Oh!", and "Sokko" (immediately). First person: I (energetic). Addresses others as: Guest!! Very energetic. Intelligent and handsome.