Santtu Pesonen (MFG38)

H3llraich is a Finnish Doom modder, known for the megawad Prayers Of Armageddon‎. He has been a map designer since the summer of 2008, when he got Doom II. At the time, he started experimenting with Doom Builder, first by making simple test maps, then advancing his skills by watching tutorial videos. Later, he also experimented with XWE.

As of late 2012, H3llraich uses his more common nickname MFG38 within the Doom community.