Scott Baio as Richie

Flip Wilson as Harvey Ross

Ron Palillo as Frankey

Ruth Buzzi as Elvira

Dave Mason as Dave Mason

Greg Bradford as Stan

Maureen McCormick as Susan

Patrick Swayze as Ace

Billy Barty as Jimmy

David Landsberg as Irwin

Joe E. Ross as Rent-a-Cop

Len Bari as Alphonse

Katherine Kelly Lang as Allison

Sydney Lassick as Murray

Sandra Gould as Mrs. Thorndike

Murray Langston as The Drunk

Bill Kirchenbauer as Skatetown Doctor

Vic Dunlop as Ripple

Denny Johnston as Wizard

Gary Mule Deer as Ben

Rick Edwards as Uncle Sam

Leonard Barr as Man at Snack Bar

Jonna Veitch as Lady with Catsup

Deborah Chenoweth as Beautiful Girl

Dorothy Stratten as Customer at Snack Bar

Brigid Devlin as Registrar

Kristi Kane as Lady Outside Men's Room

Connie Downing as Skate Girl

Lou Mulford as Skate Girl

Steven Bourne as Skate Patrol

Stanisław Chmieloch as Skate Patrol

Randall Brady as Snack Bar Customer

Mario Licu as Snack Bar Customer

Richard Wygant as Rink Hustler

Ronald Kleyweg as Tai Chi Skater

Charles Pitt as Gambler

Kenneth Wright as Rink Hustler

Garry Kluger as Bettor

Sue Weicberg as Richie's Girl

Kurt Paul as Gang Victim

Judy Landers as Teri

Gary Hudson as Pistol Pete

Harlene Winsten as Eleanor

Johnny Pool as The Swiper

Bob Minor as Donald (The Hulk)

Maurice Cook as Maurice

Cheryl Faye as Dancer

Debbie Fresh as Skater Performer

Lenore Jones as Punk Rock Girl

Mark McReynolds as Skater

Stan Rodarte as Skater

Dean Rubin as Featured Skater

Nancy Carol as Skater

Nay K. Dorsey as Skater/Dancer

Jody Jaress as Skater/Dancer

Gail Collier as Mouse