In Bill We Trust.
In memory of William "Bill" Overbeck, the survivor of Left 4 Dead that didn't survive the events of The Passing, the first DLC patch for L4D2.
I was seriously that traumatized to see my hero didn't survive. I loved Bill. He personified the man I wanted to be or be with during the event of the eventual zombie apocalypse.
Original image: [link]
Bill Overbeck, L4D, L4D2 (c) Valve.
Drawing (c) Viva Studios.