Robin Clark (born Tobias Hartmann; 6 April 1982 in Oldenburg) is a German hardstyle DJ, remixer and producer.

He is under contract to Sam Punk’s label Steel Records and is also known under the aliases Coakz, Bazzface, John Tox and RC Project.

[1] Hartmann started playing keyboard and drums in his childhood.

Since 2004 he is an inherent part at the internet radio Techno4ever.net[2] with his show called Hardbeats,performing every Thursday from 20:00 - 22:00 (UTC+1).

[4] Hartmann finished his Bachelor of Arts Social Work (BA SA) at the University of Vechta in September 2010.