Fictional character devised by comedians Matt Holness and Richard Ayoade. Garth is a successful (but yet poorly skilled) horror writer and first appeared first appeared on stage with the Mighty Boosh during their Hen and Chicken residency.
Holness' Garth Marenghi appeared on Channel Four, UK Television in 2004 on a series called "Garth Marenghi's Darkplace which was a spoof of 70s and 80's Television shows written by Holness and Ayoade. In Darkplace, Garth (played by Holness) intern plays the character 'Dr. Rick Dagless M.D.' or 'Dag' as his "buddies" refer to him. He plays a Doctor in a hospital called 'Darkplace' where the gates of hell have been opened. The comical spoof sees Rick battling evil forces as well as tending to patients.
Channel Four have announced a Darkplace film and an interview series from Ayoade and Holness playing the Darkplace Characters.
"Greetings traveller, I'm Garth Marenghi. Most of you will probably know me already from my extensive canon of chillers."