Doom 3

This is a sketch i thought of when i play and finish doom 3. Its the main character (right) named the errr... his name isn't even mentioned at all, lets call him the doom guy. and he is going face to face with one of the doom monsters, the hell knight.
I wanted to put the final boss instead of the hell knight, but there are two problems, one is the monster move so much i can't get a clear screen shot of it, the second is that i don't want to kill the suspense to those still playing doom 3.

The sketch is done in some mix media, of pencil, charcoal, and a wee bit of photoshop.
the pencil is both on the hell knight and the doom guy.
charcoal for background
and just make the sketch more darker for errie feeling with photoshop