There are five bands with this name 1. is a DJ/Producer/Vocalist from Seattle, USA who primarily plays DnB, House/Electro-House, as well as other genres as Dubstep & Breaks.
2. is a synthie pop band
3. is a Prog-Pop Band from Argentina
4. Nyx (Robin Ålander) started making music when he was 14 with Impulse Tracker and later moved on to ModPlug Tracker. He never learned the trackers that good and bought some hardware equipment. After a few years with the hardware Nyx felt that hardware wasn't the thing for him either and sold all of it except a Roland Alpha Juno 2.

Read more about NYX on Last.fm.