Dramole

Dramole had the ability to travel underground without being detected and he made a gas to hypnotized  people, his gas cause the adults attending 'Parent's Day' enter a zombie-like trance. He even hypnotized  Billy to get the Dragon Sagger. Later, all the rangers were hypnotized  as well except for Kimberly. Dramole was destroyed by the Ultrazord. He was ressurected by Lord Zedd to protect the Rock of Time and reappeared during Rita and Lord Zedd's wedding.