There are at least three artists under this name.

1) Headcrash is a German Alternative Crossover band, which mixes guitars and electronic programming.
A short biography can be found Here:
http://www.deutschmusikland.com/bands/headcrash.php

2) Headcrash is a goregrind / grindcore band

3) Headcrash is hardcore techno producer Daniel Rombold. Released at Test (PCP sub-lbael). Aliases: Akira 101, The Blade Runner, he is also member of Industrial Terror Squad. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.