There are multiple artists with this name (which is Norwegian for "your mum", hence 30+ artists are using this name):
1) A Norwegian arranger of Commodore 64 (c64) music.
2) A Norwegian retro-rock band (now Sly Dr. Bloom) 1)
Mordi is a C64 and Amiga remix arranger.
Born in 1990, he has been remixing old-school chiptunes and modules since February 2008. He won three awards in Slayradio's annual award show in 2008.
His home page is: http://mordi.ziphoid.com. 2)