BBT - Valve Head Pack

Doodled a lot of heads while family came to visit. Thus, I colored them now that they are gone and I'm back at my room :v

Characters in this pack:
- Gabe Newell
- Gordon Freeman, the G-man and headcrab from Half-Life series
- Mercenaries, Merasmus and Saxton Hale from Team Fortress 2
- Special Infected and Pills from Left 4 Dead series
- Chell, Companion Cube, GLaDOS and Wheatley from Portal series

Total: 29 different heads and 30 alternate and/or colorless versions