Minjae Lee, A.K.A Greno is a very young digital artist from South Korean. Despite his very young age, just 19 years old. Greno's work is mostly handrawn portraits with digital treatment some times. In my opinion he has a great skill and knowlegde about color combinations and an incredible style, mixing different types of elements.

Unfortunately I haven't found much information about him, however I highly recommend that you visit his website at / or his deviantart

Some Works