Mr. Caplan

Mr. Caplan is the principal of Angel Grove High School. He alternated between being well-meaning and strict, but in some episodes he seemed more as a secondary antagonist, generally treating all of the students badly (a la Lamar Bone from Doug). Depicted as the stereotypical "mean principal"; he even comes across as emotionally, physically, and verbally abusive to the students at times, especially to Bulk and Skull and once to the Ranger teens (he even shoved Kimberly to the point of choking her when she tried to escape the detention room in A Bad Reflection on You). He is notable for frequently putting Bulk and Skull in detention, and once falsely did the same to the Power Rangers, keeping them from performing their duties. He occasionally had some animosity towards Jason, as shown in "Teamwork" and "Food Fight", for an unexplained reason.

From "Rita's Seed of Evil" to "Crystal of Nightmares", he filled in as teacher for Ms. Appleby's class.

The education award Alyssa Enrilé received in A Father's Footsteps was possibly named after him, implying that he is famous in spite of his abuse.

The character's final appearance is in the episode Carlos And The Count, and is not mentioned or seen again after this point due to him being written off of the show. He does not appear in the following seasons as a result, leaving his ultimate fate left unanswered.

Note

 * Though "Food Fight" is the first episode to air that has Mr. Caplan, "Teamwork" predates the episode as it's the episode where the Rangers get their Power Weapons, although the character is not named.
 * Overzealous is the kindest word to describe him; Caplan gives detention for things often out of the victims control.