Marvo the Meanie

Marvo the Meanie (voiced by Robert Zachar) was an elf/mushroom-like monster. Rito Revolto planned to turn the Ninja Rangers into monsters. Since he had Lord Zedd's staff pointed the wrong way, its energy turned Mr. Wilton, a teacher that switched places with Rocky DeSantos, into a monster instead. Marvo turned all the rangers except Rocky into containers of liquid. Rocky had to turn the rangers back to normal before destroying Marvo because they would stay that way if he didn't. When Marvo was finished off by the Ape Ninjazord, he turned back to Mr. Wilton.