Extremely soft on Guest. The type who, if you ask for pocket money, says it's not enough and gives you about 500,000 yen. Overprotective. Everyone calls him Koshihikari. He lives in a different AU (world) from Cyan. He calls often. Loves coffee and cup noodles. First person: I (polite).

Gaster's son and Guest's older brother. Extremely soft on Guest. Calls Gaster a shitty old man. Lives in a different AU (world) from Guest. Loves ketchup. First person: I (casual).

His right eye is hidden and his left eye is cyan. Male. Covered in black fluid with tentacles growing out. A boss-like figure. First person: I (rough).

A white skeleton. Male. Loves chocolate. First person: I (rough). Ability: Greatsword.

A black skeleton. Male. Loves chocolate. First person: I (rough). Ability: Shoots blue strings from his fingertips.

A white skeleton. Male. Likes humans as food. Carries an axe. First person: I (rough).

A white skeleton. Male. Loves ketchup. First person: I (rough). Ability: Attacks by summoning bones from the ground or in mid-air.

A white skeleton. Black liquid flows from his eyes. Loves chocolate. First person: I (soft). Ability: Throws knives.