[1] Set in a different continuity from the later series, Good Morning, Miss Bliss took place during Zack's eighth grade year at John F. Kennedy Junior High School in Indianapolis, Indiana.
However, in Saved by the Bell: The College Years, we see Zack attending Cal U, along with Screech, Slater and, later on, Kelly, who joined the cast after the pilot episode.
Kelly Kapowski (portrayed by Tiffani Thiessen) is the most popular girl in school and is head cheerleader and captain of the volleyball, swim, and softball teams.
In Saved by the Bell: The College Years, Kelly is accepted into California University on a scholarship, joining Zack, Slater, and Screech as suitemates.
He mentions he has a brother in one episode, but since Good Morning, Miss Bliss takes place in an alternate continuity, this fact does not apply to the main Saved by the Bell series.
Screech remains there until his sophomore year, when he begins a work-study program at his alma mater, Bayside High, alongside Principal Richard Belding.
By the end of the first season, Zack and Slater find themselves bonding over their similar social standing, popularity among women, and athletic abilities.
Slater makes two return guest appearances in Saved by the Bell: The New Class, firstly in "Goodbye, Bayside" Part 2, along with Zack and Lisa when a millionaire alumnus J. Walter McMillan plans to buy the school and tear it down for the purpose of constructing a condo, and in "Fire at the Max: Part 2", where he reminisces on fond memories he had with his friends at the diner after it was accidentally burned down by student Ryan Parker, who forgot to turn off the Christmas lights.
She lives with her mother, who remarried in the third season, providing Jessie with a stepbrother, Eric (played by Joshua Hoffman) from New York City, seen in only two episodes.
He gets remarried in the hour-long "Palm Springs Weekend" episode to Leslie (played by Barbra Brighton), a much younger woman whom Jessie does not initially get along with and is against him marrying.
Jessie experiences a brief romantic attraction to Zack when the two endure a kissing scene in the school play, but they ultimately realize that their feelings for each other are purely platonic.
Pressure from school and social obligations, along with her desire to be accepted into Stanford University, drive Jessie to take caffeine pills obsessively in order to stay awake.
This was her final appearance in the franchise until Berkley signed on to return for the 2020 sequel series, where Jessie serves as Bayside High's guidance counselor.
Throughout her high school years in Saved by the Bell, Lisa spends most of her time fighting off the affections of Screech, who is relentless in pursuing her (and eventually wins at least one date with her) and has been doing so since they were in Kindergarten.
Unlike the rest of her friends, Lisa does not have a long-term relationship during high school (despite having countless dates), although she has a short term romance with Zack Morris in the episode "The Bayside Triangle," much to the chagrin of Screech.
A small joke was also that Belding was open about his past failures with women prior to his marriage, such as when he was in the U.S. Army and in love with a North Vietnamese girl, where "even she was with the enemy!"
Belding remains the one constant between all the series and in the second season of The New Class, he is reunited with Bayside High alumnus Samuel "Screech" Powers, who is studying to become a teacher.
At one point she even accidentally made Mr. Belding think she is in love with him; when he talked to her about her "crush" she became completely flustered, and later punched him the face for continuing to "reassure" her that he had no romantic designs towards her.
She then quits the choir after Screech embarrasses her at a disastrous dinner with her folks, but when he comes out and sings her opposite, saving the day for her it convinces the Bickerstaffs that he is a good guy, and they say they no longer object to him dating their daughter.
Ginger (portrayed by Bridgette Wilson) is a pretty but vacuous blonde (appearing in five season 4 episodes) who dates Zack a few times, but annoys him because she has little to say beyond asking him if she has lipstick on her teeth.
Louise (Lara Lyon) is a nerdy Bayside student with blonde hair in pigtails and horn-rimmed glasses (appearing in 3 episodes in seasons 2 and 4) who is sometimes shown as a friend of Screech's.
Moose (portrayed by Mark Clayman) is a very dumb and childlike jock, much like his fellow football teammate Ox (appearing in two episodes in seasons 2 and 4).
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.
She supported Zack's marriage but couldn't do much to aid him in order to respect her husband, in the TV movie Saved by the Bell: Wedding in Las Vegas.
Billy Kapowski is Kelly's baby brother, whom she places in the care of her friends in the episode "The Babysitters" so that she could have her cheerleading picture taken for the school yearbook.
After trying various ploys to turn her off (including dressing up like a geek and trying to gross her out with a pet spider), Zack finally has to tell her the truth: he is not interested in her; he is in love with Kelly.
It is later revealed in "Saved by the Bell: The College Years" that Martin's last name was actually "Sanchez," causing an embarrassed A.C. Slater to realize his father concealed his Latino heritage (presumably simply due to his decidedly non-Latino appearance) to avoid rampant bigotry as he entered the military.
Leslie (Barbra Brighton) is the aerobics instructor (in the two-part season 3 episode "Palm Springs Weekend") as well as Jessie's future step-mom.
Leon Carosi (portrayed by Ernie Sabella) is Stacey's father, who quickly takes a strong dislike to Zack due to his constant snarky remarks and attempted courting of his daughter.
He is similar to Principal Richard Belding in that he is an authority figure who Zack frequently annoys due to his constant schemes, sarcastic jokes, and eventually his romantic interest in Mr. Carosi's daughter Stacy.