Paul Gosselaar (qv)), A.C. Slater (Mario López (I) (qv)),  Screech Powers (Dustin Diamond (qv)), Leslie Burke  (Anne Tremko (qv)), Alex Taber (Kiersten Warren (qv)), and  Danielle Marks (Essence Atkins (qv)). After the pilot,  Tiffani Thiessen (qv) decided to return to play the role of Kelly  Kapowski. Essence Atkins (qv) was fired and the plotline said she  transferred to an unnamed college.