I'm kind of a fan of Joe Madureira. I loved what he'd done when I was drawing The X-Men for Marvel and his own comic Battlechasers. In the realm of video games, Darksiders and Darksiders II are probably the most well known games he made concept art for. One of his lesser known games is Dungeon Runners. But even though that game can't be played anymore, we can still enjoy the artwork ;-)