Nick Taylor is a school nerd. Nick has been tagging along with Mike since they were in elementary school and is extremely loyal to him.
In exchange for doing Mike’s homework and being roped into Mike’s various stunts, Nick receives protection from school bullies and a general boost in his confidence; but Mike’s affection for Nick is evident in spite of this.
Nick is very comfortable with his geekiness and fancies himself a ladies’ man.
The rest of the gang simultaneously picks on and humors Nick for his eccentricities (e.g. hiding in his locker, wearing extremely loud and mismatched clothes, and obsessing over science and chess).
Mike Waffle Dempsey is often referred to as “Preppy” by his friend KC Skater.
He is a charming schemer who often breaks the fourth wall by addressing the audience, sometimes temporarily freezing all of the characters around him in the process by calling, “Time out!” Zack’s schemes, though amusing, often backfire, resulting in unexpected outcomes.
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.