The Hulk is stronger than any other Marvel hero, which is why the Avengers just had to effectively kill him in the comics. As for his immortal ability to return from the dead... we guarantee the solution to THAT problem is more twisted and disgusting than any Marvel fan will expect. While every fan of the Marvel Cinematic Universe already knows that Hulk is the strongest Avenger, his immortality is actually a new twist in the current comics. A gift of his recent death and resurrection, Bruce Banner is now more divided than ever. Wandering across America in secret, Bruce can't stop getting himself killed every other day. But when the sun goes down, it's the Hulk who returns to life, out for vengeance. Unfortunately, it's the supremely lame Dr. Clive who greets Hulk in his new home, upside down (that makes sense eventually) and submerged in liquid. After explaining the beauty of the official chain of command (plus a little pressure on the right people) sending him directly into the confines of Shadow Base, Dr. Clive promises that Hulk will soon begin to pay for the pain and trouble he's caused in the past. And to make sure the Hulk won't be an issue while they use his genes for their own nefarious goals, they've taken the liberty of chopping him up into pieces.