metamorphose

(verb) change completely the nature or appearance of. Synonyms: transfigure, transmogrify. Examples: "In kafka's story, a person metamorphoses into a bug." "The treatment and diet transfigured her into a beautiful young woman." "Jesus was transfigured after his resurrection."

(verb) change in outward structure or looks. Synonyms: transform, transmute. Examples: "He transformed into a monster." "The salesman metamorphosed into an ugly beetle."