Frankie Avalon as Frankie / Potato Bug

Annette Funicello as Dee Dee

Martha Hyer as Vivien Clements

Don Rickles as Big Drag

Harvey Lembeck as Eric Von Zipper

Delores Wells as Sniffles

John Ashley as Johnny

Jody McCrea as Deadhead

Candy Johnson as Candy

Meredith MacRae as Animal

Keenan Wynn as Harvey Huntington Honeywagon

Elizabeth Montgomery as Lady Bug (voice)

Janos Prohaska as Clyde

Boris Karloff as Art Dealer

James Westerfield as Cop #2

Donna Loren as Donna

Stevie Wonder as Little Stevie Wonder

Timothy Carey as South Dakota Slim

Danielle Aubry as Lady Bug

Paul Smith as Cop #1

Val Warren as The Teenage Werewolf Monster

Mary Kovacs as Old Lady #1

Renie Riano as Old Lady #2

Shelia Stephenson as Secretary

Ronnie Dayton as Potato Bug

Alberta Nelson as Rat Pack

Linda Rogers as Rat Pack

John Macchia as Rat Pack

Bob Harvey as Rat Pack

Andy Romano as Rat Pack

Jerry Brutsche as Rat Pack

Allen Fife as Rat Pack

Guy Hemric as Surfer

Gary Usher as Surfer

Roger Christian as Surfer

Frank Alesia as Surfer

Johnny Fain as Surfer

Mickey Dora as Surfer

Duane King as Surfer

Michael Nader as Surfer

Ned Wynn as Surfer

Ed Garner as Surfer

Bud Kemp as Surfer

Jay Mullin as Surfer

Luree Holmes as Surfer

Darlene Lucht as Surfer

Mary Hughes as Surfer

Salli Sachse as Surfer

Linda Benson as Surfer

Nancy Long as Surfer

Linda Opie Bent as Surfer

Patti Chandler as Surfer

Julie O’Conner as Surfer