Slip Mahoney
Sach
Louie
Prof. Damon
Myra Hagen
Soapy (as William Phillips)
Herbie
John Graham
Eddie
Chuck (as David Condon)
Butch (as Bennie Bartlett)
Oskar
Andy - the Cop
Chico
Aggie - the Nurse
Karl
Parent (uncredited)
Attendant (uncredited)
Patient in Wheelchair (uncredited)
Little Boy (uncredited)