ALF (in costume only)..... Michu Meszaros

Willie Tanner..... Max Wright

Kate Tanner..... Anne Schedeen

Lynn Tanner..... Andrea Elson

Brian Tanner..... Benji Gregory

Dorothy Halligan (1987)..... Anne Meara

Raquel Ochmonek..... Liz Sheridan

Trevor Ochmonek..... John LaMotta

Jake Ochmonek (age 15) (1988-1989)..... Josh Blake

Neal Tanner (1989-1990)..... JM J. Bullock