Matt Oberg
Mark Lilly (voice) (17 eps)
Kurt Metzger
Randall Skeffington (voice) (17 eps)
Natasha Leggero
Callie Maggotbone (Voice) (17 eps)
Michael-Leon Wooley
Twayne Boneraper (Voice) (17 eps)
Larry Murphy
Lt. Francis Grimes / Aldermach Maggotbone (voice) (17 eps)
Randy Pearlstein
Leonard Powers / The Great Brain / Erik / Man Bird (voice) (17 eps)
Julie Klausner
Additional Voices (voice) (8 eps)
Devin Clark
Croatian Man / Additional Voices (voice) (7 eps)
Pete Holmes
Additional Voices (voice) (6 eps)
Mike O'Gorman
Additional Voices (voice) (6 eps)
Mike Britt
Additional Voices (voice) (1 eps)
Thomas Middleditch
Additional Voices (voice) (1 eps)
Rob Riggle
Drill Sergeant (voice) (1 eps)
Jay Oakerson
Ray (voice) (1 eps)
Jenny Slate
Jaclyn (voice) (1 eps)
Abby Elliott
Emily (voice) (1 eps)
Bobby Moynihan
Jerry 'The Fire Ant' McMillan (voice) (1 eps)
Lisa Lampanelli
Additional Voices (voice) (1 eps)
Dana Gould
Additional Voices (voice) (1 eps)
Alan Tudyk
Additional Voices (voice) (1 eps)
Dan Fogler
Additional Voices (voice) (1 eps)
Janeane Garofalo
Additional Voices (voice) (1 eps)
John Gemberling
Additional Voices (voice) (1 eps)