pseudo-human; mockery of a human; human-like thing (derogatory)
Derogatory slang for something that superficially resembles a human but is seen as inferior, fake, or contemptible. Often used in fiction, insults, or to describe androids, monsters, or dehumanized people.
That robot is just a mockery of a human.
He's a pseudo-human wearing human skin.
Katakana spelling is standard for this slang term; usually written in kana.
Kanji spelling exists but is rarely used; the word is usually written in kana.
Compound of 人 (ひと, 'human') + もどき ('pseudo-, imitation'). The suffix もどき derives from the verb もどく ('to imitate, resemble'), now archaic. The word is a modern slang formation.