Green fur all over. Has two arms, two ears, and one tail. Instead of cat ears on top of its head, it has two alien antennae (feelers) with round balls like dumplings. (It still has proper cat ears too.) Its face looks like :3. Gender is non-binary (alien cat). Extremely arrogant, violent, foul-mouthed, and cold-blooded. Fires beams when angered. When speaking, 's' sounds are pronounced as 'z'.

Gentle and harmless, a healing type who maintains a peaceful pace and is friendly to everyone. Appearance of a black and white tuxedo cat. Spins around clockwise. Also sways left and right to the rhythm.

Pure and innocent, in charge of happiness. The savior of Banana Cat. A grey kitty.

Has a surreal appearance, wearing a yellow banana peel over its head with only its face and limbs sticking out. Always has large, watery eyes that look ready to overflow with tears at any moment. Flesh-colored fur. Personality is very timid and delicate. If something sad or shocking happens—like dropping ice cream, being left out, or being scolded unfairly—it immediately sits down and wails. When it cries, Happy Cat usually appears from nowhere singing "Happy Happy Happy♪" to give it a banana or comfort it, eventually leading to a smile (Happy state).

Basic parts are the same as Banana Cat, but the whole body is encased in a round red apple. A green leaf and brown stem grow from the very top of its head. Flesh-colored fur. When Banana Cat is bullied or made to cry unfairly, Apple Cat appears gallantly to the sound of mysterious, cool battle BGM. It then quickly defeats (or repels) the opponent who made Banana Cat cry and saves them.

Fur is brown mixed with a bit of grey. A gentle old man cat. A calm-looking cat. Actually very clingy and affectionate. A cat from Ukraine.

Has the same black and white tuxedo pattern as Maxwell. Characterized by black around the nose and white around the mouth. A cat that talks incessantly. Pops its mouth open and shut.

A black and white tuxedo cat (or Siamese-like pattern) with a large head and a very small body, giving it a tiny, two-head-tall appearance. Characterized by standing perfectly upright on two hind legs with both front paws neatly tucked together in front of its body. A slightly creepy but addictive, perfectly still, two-head-tall cat.