<P> Marvin Nedick (Gino De Mauro) is Valley's star wrestler and a major threat to AC Slater's undefeated wrestling record (in "Pinned to the Mat" (1.9)). After career day, Slater takes up cooking and quits the wrestling team, leaving Screech to wrestle Nedick . As Screech prepares to wrestle him, Slater appears . When asked why he changed his mind, Slater says that he burned his quiche . Slater quickly defeats Nedick in the wrestling match . </P> <P> Lieutenant Chet Adams (portrayed by Cylk Cozart, in the season two episode "Zack's War") is the head of Bayside's California Cadet Corps program . Lisa shows an infatuation towards Lt. Adams (even once inadvertently calling him "Lt. Hot") and joins the program in an attempt to gain his favor . He then reminds her that he's married . At the beginning of their training, Adams tells Zack that he can divide the cadets into teams, which prompts Zack to clump together all the "nerds" into one team and all the "jocks" onto another team, thinking all the jocks will be on his team . Adams replies by saying, "You get to pick the teams, but I get to pick the captains" and puts the nerds on Zack's team and the jocks on Slater's team . Jessie's feminist attitude clashes with Adams' military style, as she asks him to revise his motto "separating the men from the boys" to "separating the persons from the persons ." </P> <P> Frank and Laura Benton (Stephen Mendel and Jennifer McComb) are a homeless father and daughter, respectively (in the 2 - part season 3 episode "Home for Christmas"), who catches the eye of Zack and the gang around Christmas time . Laura, who works in a department store with Kelly, seems to be a tentative love interest for Zack; she is very shy around Zack about her homelessness . Zack, Slater and Screech get Frank to a hospital when he passes out at the mall from hunger, and then they find out he is Laura's father . Laura's boss accuses her of stealing a suit jacket that Kelly set aside to buy, so Frank would have an outfit that he could wear to job interviews . Later, Laura's boss apologizes and gives Laura the jacket for free . Eventually, the Morris family takes in the Bentons until they could "get back on their feet ." </P> <P> Gem Diamond (Gary Beach) is a con artist (in "Class Rings" (4.12)) who sells Zack fake class rings, which turn the wearer's finger green . Desperate to replace the bunk rings with the genuine article, Zack and Slater make a plan in which Screech threatens Gem with karate unless he replaces the rings . Gem concedes, and the student body is satisfied with their new jewelry . He is last seen running out of the Max, being driven away by his mother in an attempt to escape from Screech's moves . Gem also appears in the California Dreams episode "Honest Sly" as a used car dealer . </P>

Who did kelly break up with zack for