Mark-Paul Gosselaar

Zack Morris

John Candy

Himself

Dustin Diamond

Samuel 'Screech' Powers

Elizabeth Berkley

Jessie Spano

Ross Bagdasarian, Jr.

Alvin Seville (voice)

Paul Fusco

ALF (voice)

Sherman Hemsley

The Master Programmer

Matt Hill

Kevin Keene (voice)

Robert Ito

Miyagi Yakuga (voice)

Mario López

Albert Clifford 'A.C.' Slater

Don Messick

Papa Smurf (voice)

John Moschitta Jr.

Flash

Tiffani-Amber Thiessen

Kelly Kapowski

Lark Voorhies

Lisa Turtle

Marsha Warfield

Ms. Bagwind

Ed Alonzo

Max (archive footage)

Dennis Haskins

Mr. Richard Belding (archive footage)