Brendan Gleeson

as Freddy Cousaert

as Wiglaf

as Joseph Yablonski

as Jack

as Rusty(6 eps)

as Silvermane

as Finn 'Silvermane' Byrne(8 eps)

as Dad

as Narrator(1 ep)

as Jackie Sullivan

as Self

as Paddy (voice)

as Self

as Narrator(3 eps)

as Colm Doherty

as Narrator

as Duncan

as Huntsman (voice)

as Liam(1 ep)

as Narrator(2 eps)

as Donald Trump(2 eps)

as Self - Guest (archive footage)(1 ep)

as Self (voice)

as Jimmy

as Scott(10 eps)

as Irishman (segment "The Mortal Remains")

as Captain Vicks (voice)

as Jeremiah

as Knuckles McGinty

as Bill Hodges(30 eps)

as Donald Horner

as Thomas Coughlin

as Joseph Lynch

as Colby Culter

as Otto Quangel

as Narrator

as Old Thomas Nickerson

as Arthur Steed

as Self(1 ep)

as Searbhán

as Self - Guest(1 ep)

as The Alienist

as Conor / Mac Lir (voice)

as Murray French

as General Brigham

as Father James Lavelle

as Self - Guest(2 eps)

as Glór(7 eps)

as Victor Doyle

as Henry Osborne

as The Pirate With Gout

as The Pirate with Gout (voice)

as Colonel Hamilton

as David Barlow

as Dr. Holloran

as Dermot Weld

as Sergeant Gerry Boyle

as Alastor 'Mad-Eye' Moody

as Narrator (voice)(7 eps)

as Con Keogh

as Darren Perrier

as Martin Brown

as Winston Churchill

as Abbot Cellach (voice)

as Ken

as Wiglaf (Voice)

as Desmond McKay

as Alastor 'Mad-Eye' Moody

as Self(1 ep)

as Liam O'Leary

as Self

as Walter Keegan

as John Joe Kenny

as Alastor 'Mad-Eye' Moody

as Reynald de Chatillon

as Self

as Donnelly

as August Nicholson

as Menelaus

as De Jagar

as Stobrod Thewes

as Self

as Ferny Toro (voice)(2 eps)

as Walter 'Monk' McGinn

as Jack van Meter

as Frank

as Lord Johnson-Johnson

as Paul

as Mickie Abraxas

as Harry McKee

as Simple Simon

as Marc Stevenson

as McCloy

as Jim Menzies

as Sheriff Hank Keough

as Garda Jim

as Sweety Barrett

as Martin Cahill

as Father Bubbles

as John Harte

as Bunny Kelly

as Barney Mooney

as Stubbs

as Richard

as Frank Ferguson

as Liam Tobin

as Ginger

as Hamish Campbell

as Leslie Parry(9 eps)

as Lester

as Thomas Macken

as Inspector Bolger

as Social Club Policeman

as Michael Collins

as Quarryman

as Brendan Dowd

as Joe Quimby Sr. (voice)(1 ep)

as Farmer(1 ep)

as Thomas Macken(1 ep)

as Lester(1 ep)

as Self - Host(1 ep)

as Self - Nominee(1 ep)