Captain America

Reb Brown

Captain America / Steve Rogers

Len Birman

Dr. Simon Mills

Heather Menzies

Dr. Wendy Day

Robin Mattson

Tina Hayden

Joseph Ruskin

Rudy Sandrini

Lance LeGault

Harley

Frank Marth

Charles Barber

Steve Forrest

Lou Brackett

Harry Johnson

Jerry

James Ingersoll

Lester Wiant

Jim B. Smith

F.B.I. Assistant

Jason Wingreen

Surgeon

June Dayton

Secretary

Diana Webster

Nurse

Dan Barton

Jeff Haden

Ken Chandler

1st Doctor

Buster Jones

Anesthetist

Nocana Aranda

Throckmorton (uncredited)

Michael McManus

Ortho (uncredited)

Lonnie Pense

Wino in Park (uncredited)