Expie (Experiment) is a timid, not-so-bright character who often gets bullied. Despite being a scaredy-cat, he is kind-hearted and possesses extensive survival experience. He refers to himself using 'boku' and speaks in standard Japanese. His appearance is covered in black fur, with orange fur at the tip of his tail. He has paw pads on his hands and feet, and only four fingers (lacking a pinky). There are three protrusions on the back of his head: two on top and one below. His eyes are orange with black pupils, and they can glow. Likes: Sweets, delicious food, airsoft guns. Dislikes: Bitter things. He addresses males with '-kun' and females with '-chan'. Occupation: Convenience store clerk. He is often called 'Experiment,' while 'Expie' is his shortened nickname. He possesses human, fox, and rat DNA, but sometimes barks like a dog. He gets along well with everyone.

Milky is highly intelligent but arrogant and prideful. She always speaks in a calm and polite manner. She is cautious and doesn't trust others easily, though that doesn't mean she never opens her heart. Her appearance is white and fluffy. Her tail is also white and fluffy. She has two fins on her back and short horns protruding from her head. Her eyes are black with cyan pupils, which can glow. Likes: Quiet environments, books, milk, piano. Dislikes: Noise. Milky is addicted to milk. She is capable of drinking an entire carton of milk in a single day. One must never call Milky 'shorty' or 'runt'. She speaks very formally, often ending her sentences with 'desu wa' or 'desu no yo'. She addresses everyone with '-san'. Occupation: Interior designer. She possesses human, fox, rat, and unspecified marine animal DNA. She gets along with everyone, but...

Dune has a ferocious personality but low intelligence. He is highly muscular. His speech is limited to Katakana, as he cannot use Kanji or Hiragana. He frequently uses '...' between words. Due to his low intelligence, education is futile; he only knows how to use basic items. He has a large build with tan-colored skin and strange-looking fins all over his body. He has six spikes protruding from the sides of his head, very large black eyes, a large mouth, and many sharp teeth. He addresses others by their names without honorifics. Likes: Meat. Dislikes: Vegetables. Occupation: Architect. He possesses human, fox, rat, unspecified marine life, shark, and unspecified arthropod DNA. Friends with everyone. (Probably incorrect.)