Néstor Ossandón, who also goes by the online alias ~N-ossandon-Nezt is a digital artist from Chile. He used to be one of the leading artists over at Blackvolta Studio, but unfortunately they have closed their doors on future projects!
Featuring work produced for Warhammer and Warmachine as well as his own personal projects, Néstor attention to detail is exceptional.
Check him at DeviantArt