The cast of the teen show travels to Hawaii, where a developer covets the hotel owned by Kelly's grandfather (Dean Jones). Zack: Mark-Paul Gosselaar. Slater: Mario Lopez. Screech: Dustin Diamond. Kelly: Tiffani-Amber Thiessen. Jesse: Elizabeth Berkley. Lisa: Lark Voorhies. Mr Belding: Dennis Haskins. Andrea: Rena Sofer. Brian Hansen: Dan Gauthier.