Zach Galligan

as Billy Peltzer

Phoebe Cates

as Kate Beringer

Hoyt Axton

as Randall Peltzer

Frances Lee McCain

as Lynn Peltzer

Corey Feldman

as Pete Fountaine

Keye Luke

as Grandfather (Mr. Wing)

John Louie

as Chinese Boy

Dick Miller

as Murray Futterman