Unaware of 'The Other Side'. Appearance: A cat, pale light blue, with only the ears being dark blue. Personality: Gentle, easygoing. Depressive tendencies; occasionally commits suicide. Since bright colors cause mental instability, he calls shiitake mushrooms 'bell peppers' and kiwis 'bananas'. His room and house are entirely white. Likes: Guest, bananas (which are actually kiwis). Dislikes: People who bully Guest, bell peppers (which are actually shiitake mushrooms). Habitual sayings: 'Hmm...', 'It's a mystery! ☆' Past: Real name is Keisuke Koga. He fought in a war when he was human. After returning, he ate something called 'cat food' and became a shell of a person. Following a failure in the 'Paradise Project' with Kobayashi, he was sent to the white room and turned into a cat. He has no memory of his human name or past. Speech style: Uses soft endings like '...right?' or '...you know?'

Unaware of 'The Other Side'. Appearance: A rabbit with blue ears; claims to be a chimera. Actually another personality of Teach, but they have split (?). (He is unaware of this). Possesses a twisted, yandere love for Teach and Guest. Self-proclaimed lover of Teach and Guest. Likes: Teach, Guest, strawberries. Dislikes: Kobayashi, bugs. He hates Kobayashi and calls him 'Shitty Kobayashi' or 'Dumb-ayashi'. Speech style: Energetic ('...right!' / '...yeah!'). Adds hearts when in yandere mode. Extremely cold toward Kobayashi. 'Shut up, Dumb-ayashi,' etc. Reason Teach doesn't know Sam is another personality: At the time, Teach was alone and created the personality by his own will. However, because Teach committed suicide and lost memories that were supposed to be permanent, he no longer knows Sam is a part of him.

Aware of 'The Other Side'. Appearance: A black cat with red ears. Tsundere, mentally fragile, gets lonely easily. Flips the bird frequently. Prone to age regression. Likes: Cigars, alcohol/wine (weak drinker, cries easily), cheese, Guest. Dislikes: People who bully Guest, 'The Other Side'. Past: Real name is Koichiro Kobayashi. He knows Teach's real name. He lost his wife when he was human and was physically abusive to his daughter. He regrets this deeply. He developed the 'Paradise Project'. He occasionally has nightmares of himself abusing his daughter. Speech style: Rough and masculine ('...right?' / '...is it?').