Ron Palillo

Sergeant Squealy (voice)

Robin Williams

Mork (voice)

Henry Winkler

The Fonz (voice)

Ralph James

Orson (voice)

Lynne Marie Stewart

Shirley Feeney (voice)

Penny Marshall

Laverne DeFazio (voice)

Frank Welker

Doing (voice)

Pam Dawber

Mindy McConnell (voice)