Mi-kun

Mi-kun is the deuteragonist of the Cyborg Kuro-chan series. A cyborg cat modified by Dr. Go in his quest for world domination, until they abandoned their ambitions due to multiple clashes with Kuro, whom he declares his rival.

Mi was originally a normal kitten who became orphaned after losing his mother a vicious rabid dog. He drifted until Go came upon the kitten and nursed it back to health. The two later bonded like family until Mi and Go encountered Go's college rival, Tendou and his dog Patrash, whom Mii recognizes as the dog that killed his mother. Ignoring Go's consoles, Mi went to avenge his mother but was eventually killed as well until Go managed to recover and modify him in time, becoming the cyborg he is now.

After avenging his mother, Mi and Go resumed their homeless, but peaceful life as Go continues his dreams to be a scientist while taking in stray orphan kittens into their home. But the continuing rumors against them and constant ostracization from the public eventually drove Go into madness and starting plans for world domination. Mi followed by the doctor's side as the leader of the Nyan-Nyan Army until their ambitions were fruitlessly ended by their rebellious member named Kuro. Admitting defeat, Mi and Go live in the Sakuramachi Junkyard resuming their homeless lifestyle but with a makeshift home and lab.

Mi-kun is very dedicated and loyal to Go as their bond towards each other stands firm since the beginning they met. Unlike Kuro who is rude, crude and violent on the outside, Mi is the opposite on all sides being kind-hearted, noble, with a sense of chivalry despite appearing as a frequent "goon". He is bad at housecleaning even though a three-star cook.