President Curtis

Keith David

President Andre Curtis (voice)

Stephanie Beatriz

Rho Banks (voice)

Jim Rash

Special Agent Francis O'Doyle (voice)

Alanna Ubach

Janice (voice)

Nick Reczynski

Slender Man / Guard / Shawn Martenson (voice)

David Cross

Dr. Kenny Finch (voice)

Dan Bakkedahl

Special Agent Alan Chomps (voice)

Nolan North

Troy (voice)

Danielle Uhlarik

Shroom Leader (voice)

Chris Diamantopoulos

Munson (voice)

Piotr Michael

Declan Cahill (voice)

Debra Wilson

(voice)

Dan Harmon

Hank (voice)

Maria Bamford

Soul Ganderer (voice)

Kristen Schaal

Amelia Earhart (voice)

Carlos Alazraqui

(voice)

Roman Siciliano

(voice)

Grey DeLisle

Orfhlaith O'Doyle (voice)

Kelsey Scott

Beverly Mills (voice)

Danny Pudi

Amil Bhattam (voice)