The Immortal Hulk #6 (Schoonover Cosmic Ghost Rider Cover)
"THE GREEN DOOR" STARTS HERE!
Bruce Banner is alive - and everyone knows it. Now he's hunted by the government, Alpha Flight, the mysterious Shadow Base...and the Avengers. And someone's going to find him first.
But Bruce has bigger problems. Something terrible has infected him. Something with unspeakable plans for humanity. And the only one who knows about it...
...is the IMMORTAL HULK.