There are at least 4 artists named ZLO:
1) Black metal band from Czech Republic with members of Maniac Butcher, Sekhmet, Hellocaustor, Detonator666, Dark Storm etc . Released the demo “Evangelium 666” (2006) and full-lenght "Signum Diabolicum" (2010).
2) Experimental and minimal/dub techno producer/DJ from Lithuania - R.I.P. 2010 (should be writen ZLo).
3) Punk band ZLO from Tallinn first started to rehearse on 7th April 2001.

Read more about Zlo on Last.fm.