There are at least five artists with this name:

1) Dave Clarkson processes and loops various sound sources including radio interferance, guitar, percussion, keyboards and voice to create rhythmic experimantal sounscapes.

2) A Japanese Deathcore band from Okinawa Prefecture, Japan
Bandcamp: http://illuminati666okinawa.bandcamp.com/releases
Facebook: https://www.facebook.com/illuminati.okinawa
Twitter: https://twitter.com/IlluminatiOki
YouTube: https://www.youtube.com/watch?v=cgtAiNMzcMk
Store: https://illuminati.stores.jp/

3) Funk & Rock Band From Bangalore, India.
http://www.myspace.com/illuminatibangalore
http://www.reverbnation.com/illuminatibangalore
Formed in June 2006, the band has an amazing repertoire and is rated as one of the leading bands of Bangalore. The band was, unlike others, more inclined towards own compositions, making ten originals within a span of six months. “Use Protection”, an AIDS awareness song, was an instant hit among people and received critical appreciation.

4) Drum & Bass producer

5) Romanian metal band: http://www.myspace.com/the1lluminat1band

6) Mexican death metal band: http://www.myspace.com/illuminatizamora Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.