Garth Marenghi's Darkplace

Matthew Holness

Garth Marenghi / Dr. Rick Dagless M.D.

Matt Berry

Todd Rivers / Dr. Lucien Sanchez

Richard Ayoade

Dean Learner / Thornton Reed

Alice Lowe

Madeleine Wool / Liz Asher

Kim Noble

Jim

Stephen Merchant

The Chef

Julian Barratt

Padre

Noel Fielding

Monkey Man

Jonathan Edwards Young

Clive The Temp

Matt Green

Highlander

Graham Linehan

Security Guard

Sarah Kants

Larry's Mother

Lydia Fox

Rick's Wife

Lawrence Michelowski

Larry Renwick

Spencer Brown

Patient

Richard Thomson

Highlander

Tina Tutkova

Nurse

Adrian Sturges

Dean Learner's Dead Half Brother