James Urbaniak
Dr. Venture / Phantom Limb / Jonas Venture Jr. (voice)
Acting
Patrick Warburton
Brock Samson (voice)
Acting
Michael Sinterniklaas
Dean Venture (voice)
Acting
Doc Hammer
Dr. Mrs. The Monarch / Henchman 21 / Shoreleave / Billy Quizboy / Dermott / Red Mantle / Rose / Ward (voice)
Acting
Christopher McCulloch
Hank Venture / The Monarch / Sgt. Hatred / Hunter Gathers / Pete White / Watch (voice)
Writing
Nina Arianda
Mantilla (voice)
Acting
Clancy Brown
Red Death / Daisy (voice)
Acting
John Hodgman
Snoopy (voice)
Acting
Hal Lublin
Clayton / Seth / Tour Guide (voice)
Acting
Jane Lynch
Bobbi St. Simone (voice)
Acting
Charles Parnell
Jefferson Twilight / OSI Agent (voice)
Acting
Jay Pharoah
Nuno Blood / Additional Blackulas (voice)
Acting
Steven Rattazzi
Dr. Orpheus (voice)
Acting
J.K. Simmons
Ben (voice)
Acting
Dana Snyder
The Alchemist / Conductor / Houseless Guy (voice)
Acting