Paul Giamatti

as DJ Art Bell

as Calvin

as Sam Born

as Jerry Blankenbuehler

as David Slade

as Nus Braka(3 eps)

as John Adams (voice)(5 eps)

as Harold Levinson

as Self

as Narrator

as Self(1 ep)

as Paul Hunham

as (voice)(2 eps)

as Self - Narrator

as Madison Grant (voice)(1 ep)

as Self (archive footage)

as Dr. Sylvester

as Self - Narrator

as Nilo Nemolato

as Nathan

as Self - Narrator / Maury Terry (voice)(4 eps)

as Christian Barbrow(8 eps)

as Self - Contestant(1 ep)

as Self

as Richard Grimes

as Patrick

as L. Marvin Metz(4 eps)

as Sam Goudsmit

as Narrator (voice)

as Olgilvey(1 ep)

as Andrew’s Shit (voice)(1 ep)

as Self

as Dr. Alan Shapiro

as Dr. Mobley

as Chairman Drek (voice)

as Honoré de Balzac(1 ep)

as Charles 'Chuck' Rhoades Jr.(84 eps)

as Self - Guest(6 eps)

as Jerry Heller

as Self(1 ep)

as The Academy Teacher (voice)

as Monsieur Homais

as Dr. Eugene Landy

as Dr. Lawrence Hayes

as Goldfish (voice)

as Gordon Boonewell

as Theodore Roosevelt (voice)(7 eps)

as TV BoJack (voice)(1 ep)

as Self

as Aleksei Sytsevich

as Self(3 eps)

as Self - Guest(1 ep)

as Ptah-Nem-Hotep

as Hoke Mosely

as Self

as Storylord (voice)(2 eps)

as Ralph

as Theophilus Freeman

as Abraham Zapruder

as Friar Laurence

as Dennis Girard

as Chet (voice)

as Dr. Barker

as Self

as Benno Levin(1 ep)

as Arnie Blondestone

as Narrator

as Self

as Paul Gill

as Benno Levin

as Phillip(1 ep)

as Ben Bernanke

as Tom Duffy

as Reader / George Remus (voice)(3 eps)

as Kingsley

as Mike Flaherty

as King John

as Self(1 ep)

as Barney Panofsky

as Dr. Satan (voice)

as Vladimir Chertkov

as Paul

as Uncle Chaz (archive footage)

as Richard Garsik

as Rick Honeycutt

as John Adams(7 eps)

as Nick (Santa) Claus

as Hanta (voice)

as Self

as Mr. X

as Hertz

as Georges Gattling

as Ritchie(1 ep)

as Screw-On Head (voice)

as Inspector Uhl

as Stan Beals (voice)

as Screw-On Head (voice)(1 ep)

as Cleveland Heep

as Self - Guest(1 ep)

as Joe Gould

as Narrator (voice)

as Tim the Gate Guard (voice)

as Self(1 ep)

as Miles

as Shorty

as Harvey Pekar

as Narrator

as Gordo

as Anthony Russo

as Self(1 ep)

as Johnson J. Johnson

as Marty Wolf

as Toby Oxman

as Limbo

as Todd Woods

as John

as Ted Hedley

as Ted Hedley

as Bob Zmuda

as Carlo

as Herman Klurfeld

as Veal Chop

as Rudy

as Sergeant Hill

as Blaine (uncredited)

as Control Room Director

as Jeremiah Piper

as Professor Abbott

as Self(2 eps)

as Bellman

as Kenny

as FBI Technician

as Detective Wilson

as Mr. McKay (voice)(1 ep)

as Hotel Clerk

as George

as Self(5 eps)

as Self - Nominee(1 ep)

as Courtroom Audience (uncredited)

as Scott

as Dr. Wargner

as Extras Guild Researcher

as Self - Guest(5 eps)

as Harry Tjarks(1 ep)

as Kissing Man

as Larry Canipe

as Heckler #2

as Self(2 eps)

as Narrator (voice)(3 eps)

as Self - Host(1 ep)

as Self(2 eps)

as Self - Nominee(1 ep)