The biological process of transformation in animals or plants, such as a caterpillar turning into a butterfly or a plant developing specialized structures.
abnormality
An abnormal state or condition that deviates from the norm; anomalous
pervert
A perverted person; describes behavior or interests that are sexually deviant or creepy; sometimes used colloquially as a slang term for "hentai" or creepy individuals.
mentally unstable
To undergo an abnormal psychological or physiological change
to change form
(Literary) to change one's original form or state; to undergo a transformation in appearance or condition