So this was actually part of my 'Inspiration Jar' that a friend made for me, with the first pull being 'Draw a Video Game Boss'. Now, after a long hard think I could not think of just ONE to draw, so I decided on 13! Using a different approach to getting this done, and quite a few reworks to get it all to gel, I now have my bosses! So from top left row to bottom right row....
1: Metal Gear Rex from Metal Gear Solid
2: Death Egg Robo from Sonic 2
3: Master Hand from Smash Bros
4: Bowser from Mario
5: Deviljho from Monster Hunter
6: No9 from Parasite Eve 2
7: Dark Link from Zelda
8: Sephiroth from Final Fantasy
9: M.Bison from Street Fighter
10: Le Chuck from Monkey Island
11: Hansom Jack from Borderlands
12: Pyramid Head from Silent Hill
13: Nemesis from Resident Evil