The Venture Bros.

Doc Hammer
Dr. Girlfriend / Henchman 21 (voice)

Patrick Warburton
Brock Samson (voice)

James Urbaniak
Dr. Venture (voice)

Michael Sinterniklaas
Dean Venture (voice)

Steven Rattazzi
Dr. Orpheus (voice)

Cristin Milioti
Sirena (voice) / Stab Girl (voice) / Receptionist / Night Nurse Cindy Marie Abra...

Paul Boocock
Dr. Jonas Venture (voice) / Dr. Jonas Venture / Additional Voices (voice) / High...

Brendon Small
Action Johnny (voice) / Resistance 1 (voice) / Swifty / Hector / Crime-o-dile He...

Dana Snyder
The Alchemist (voice) / President Breyer (voice)

Charles Parnell
Jefferson Twilight (voice) / Mandalay (voice)

Bill Hader
Professor Impossible / Alien villain (voice) / Professor Impossible / Phage (voi...

Toby Huss
General Treister (voice) / Scaramantula (voice)

H. Jon Benjamin
The Master (voice)

Stephen Colbert
Professor Impossible (voice)

Kevin Conroy
Captain Sunshine (voice)

Patton Oswalt
Wonderboy (voice)

Nathan Fillion
Brown Widow (voice)

Seth Green
Lance Hale / Mrs. Z (voice)

Steve Park
Mike Sorayama (voice)

John Hodgman
Dale Hale (voice)