<P> Nerdstrom (portrayed by Jeffrey Asch) is a rich nerd (appearing in two episodes in seasons 2 and 4) who is Violet Bickerstaff's boyfriend and treats her rather poorly, although he does buy her a gold - plated pocket protector . His poor treatment of her is one of the factors in her becoming Screech's girlfriend . While most of the nerds comport themselves with a bumbling dignity at most, Nerdstrom goes above and beyond, behaving as a pompous, stuck - up geek . He defeats Zack in a game of poker, but gets his comeuppance in the end . Perhaps Maxwell's most noted accomplishment at Bayside is mistakenly kissing Screech's dog, "Hound Dog" believing him to be Jessie, to everybody's delight . He is later humiliated when Screech pointed out that Maxwell kissed his dog and tells Maxwell to stay out of Violet's life . </P> <P> Ox (Troy Fromin) is a member of the Bayside football team and an archetypal "dumb jock" (appearing in nine episodes in seasons 3 and 4) who pals around with Slater when Slater is without his friends . Despite being a jock, he dates a female nerd, and is often shown to be gentler and more sensitive than his size and oafish behavior would suggest . He is among the students who get drunk senior year at the toga party . A similar character named "Moose" also appeared on the show, however . </P> <P> Rod Belding (portrayed by Ed Blatchford) is Mr. Belding's brother and steps in as a substitute teacher during junior year, after Mr. Dickerson has a mental breakdown . He initially makes a hip impression on the students because of his happy - go - lucky attitude, world - weary demeanor, and tales of defying authority and schoolwork . Rod arranges to take the students on the rafting trip for their annual class trip (ruining Mr. Belding's plans to visit Yosemite Park) and attempts to teach them about it . Mr. Belding is overshadowed by his brother's connection with the students, which is evident in a minor confrontation they have when Mr. Belding tells his brother he is not to be teaching the kids whitewater rafting on official class time . After Zack accuses him of being jealous of Rod, he soon finds out what he's really like on the inside . During a confrontation with the brothers, Rod tries to skip out of the trip just to meet a stewardess named Inga . Mr. Belding is furious that Rod would abandon his commitment to the students and orders him never to come back to Bayside . Rod leaves as Zack ducks behind some lockers to avoid his sight . Not wanting to upset his students, Mr. Belding claims that Rod is ill . However, when he offers to chaperone the trip instead, the students happily and gratefully accept . Zack, who had secretly overheard the incident, tells his principal that "we got the better Belding ." </P> <P> Becky Belding, Mr. Belding's wife (portrayed by Louan Gideon), is featured in the episode "Earthquake!", in which she, Zack and Tori get stuck in an elevator after a minor earthquake . During the time in the elevator she goes into labor and gives birth to the Beldings' son with the help of Zack, who becomes the baby's namesake . </P>

Who played rod belding on saved by the bell