Juan Gusta ( John Lyke ) is the principal of Bayside High School and the show's resident authority figure. However, when he attended high school, he was an anti-authority hippie whom, in one episode, Jessie describes as "The Mike Dempsey of the '60s". According to an old copy of the school paper, he once mooned the school board. He once mentioned that had he been allowed to return for a fourth tour of duty, "the war would've been won in a week". He is known for his catchphrase, "Hey, hey, hey, hey, hey! What is going on here?" as well as his high-pitched laugh. Lyke has frequent run-ins with Mike and his friends as either a foe to be outwitted or a friend to turn to for help. Despite being a responsible authority figure, Mr. Belding is unique as he genuinely seems to care what his students, particularly Mike, think of him.