This one-of-a-kind Hero Initiative Sketch Cover to Hulk (2008) #1 was drawn by well-known comic artist Bob Wiacek.
While portions of the project were displayed at various times, all 100 Hulk (2008) #1 Covers were displayed together in the "Green Room" at Wizard World Chicago 2008.
The Hero Initiative is a non-profit organization that assists comic creators in need, helping out with medical, financial or personal assistance.