This one-of-a-kind Hero Initiative Sketch Cover to Hulk (2008) #1 was drawn by artist Sean Phillips.
Mr. Phillips is probably best known for his interior art on the incredibly successful original MARVEL ZOMBIES limited series.
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.