Mark Klem is a musician, currently residing in Hattiesburg, MS, USA, and is known for his contributions to a number of Doom projects. He also contributed for the soundtrack of Wacky Wheels. Klem has produced original material such as soundtracks, maps and textures for the following projects: * Strain * Requiem * Memento Mori * Memento Mori II * Cringe * Cringe 2 * GothicDM * GothicDM 2 * Community Chest He has also contributed to various projects by Team TNT.