|Albert Clifford "A.C" Slater|
|First appearance:||Dancing to the Max|
|Portrayed by:||Mario Lopez|
- "What are you gonna do about it, preppy?!"
- —Slater to Zack
Albert Clifford "A.C." Slater is the deuteragonist of the series and token "jock" of the group. He becomes the school's star athlete, excelling as a wrestler and the quarterback of the football team. He is on the basketball team in one episode, even though the basketball season coincides with the wrestling season. Slater is best friends with Zack.
An army brat, he was an outsider, having transferred to Bayside High in the pilot episode (which aired late in season 1 as a flashback). A.C. mentions that he has been to Bolivia, Italy, Iceland, and Berlin among other places.
A common theme occurs when Jessie constantly bickers with A.C. over his insensitive remarks, particularly about women. He refers to Zack as "Preppy" and when he starts dating Jessie, calls her "Mama". Lopez is a drummer and dancer and some episodes include Slater showcasing these "hidden talents."
His father (a Major) appears in two episodes, but his mother, though mentioned throughout the series, never appears. He also has a younger sister named J.B. whom Zack briefly dated, much to Slater's chagrin.
When Zack was dealing with Gem Diamond to purchase class rings, the A.C. was stated as meaning "abnormally cruel."
In Fake ID's where the six core characters used fake I.D.'s to get into an "over 18" dance club called "The Attic," the A.C. was stated as meaning "absolutely charmed."
In the season 4 episode "Love Machine," his ex-girlfriend from Berlin visits and calls him by his real name, "Albert Clifford", but the meaning of the abbreviation "A.C." periodically served as comedic fodder during the show's run.
Although the episode reveals that A.C. does not fluently understand Spanish, he is seen speaking broken Spanish to the kitchen staff of the Malibu Sands Beach club. Slater receives a wrestling scholarship to the University of Iowa, but ends up going to California University with Zack, Screech, and Kelly.
- Much like Voorhies, Lopez was able to captivate the show's producers into casting him into a role that was originally written to be Caucasian. This issue of Slater's ethnicity is addressed in an episode from The College Years, where it is revealed that 25 years earlier A.C.'s father changed his last name from Sanchez to Slater so he could get into the military academy.