High Quality Content by WIKIPEDIA articles! Garth Marenghi is a fictional horror author and actor, created by English comedians Matthew Holness and Richard Ayoade, and played by Holness. To date, the character has appeared in two stage shows, the Perrier Award-nominated Garth Marenghi`s Fright Knight and Perrier Award-winning Garth Marenghi`s Netherhead, and the Channel 4 TV series Garth Marenghi`s Darkplace and Man to Man with Dean Learner.