metamorphose

Verb

• change in outward structure or looks
  • He transformed into a monster
    
  • The salesman metamorphosed into an ugly beetle
    

• change completely the nature or appearance of
  • 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
    

Related words

• Synonyms: 
  transform , transmute , transfigure , transmogrify