The Metamorphosis of Johnny Tremain Johnny Tremain is like a butterfly; he went through a transformation. Johnny Tremain is a book by Esther Forbes about a crippled boy during the American Revolution and the events he endures. Johnny Tremain was a very dynamic character because people and events affected him. People change main characters in many books. Johnny Tremain is no exception. In Johnny's case it was the Lyte and the Lapham families. Both the Lapham family and