Mark-Paul Gosselaar Zack Morris Actor Tiffani Thiessen Kelly Kapowski Actor Mario López A.C. Slater Actor Elizabeth Berkley Lauren Jessie Spano Actor Dustin Diamond Samuel 'Screech' Powers Actor Lark Voorhies Lisa Turtle Actor Dennis Haskins Mr. Richard Belding Actor Ed Alonzo Max Guest Star Patrick Thomas O'Brien Mr. Dewey Guest Star Jesse Wilson Neil Guest Star Mike Lavelle Kevin the Robot Guest Star Peter Engel Executive Producer Franco Bario Producer Bennett Tramer Producer Don Barnhart Director Stephen Langford Writer