The comics have recently shown an ingenius way to kill Bruce Banner and keep Hulk from resurrecting, but that is depicted as a trick, and temporary trap. From all apearances, Timeless is a true attempt to show Hulk can die, but only if another Hulk is born. Article breakdown: Theoretically, Hulk can die of old age, but he can live for so long that he is - in fact - immortal when it comes to aging.
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Bruce Banner, though, does age, and if Banner died before transforming into Hulk, the Hulk would die as well. The Immortal Hulk Can't Die - But Bruce Banner Can From his first appearance all the way back in 1962's Incredible Hulk #1 (by Stan Lee and Jack Kirby), it was clear that Bruce Banner's titular alter. The Hulk persona shows himself to Bruce upon waking up and allows Banner to die, leaving the Hulk alone in the world so he can separate himself from Bruce upon his death.
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Dr. Bruce Banner is a nuclear physicist who, after being bombarded by gamma radiation, has become the incredible monster baptized as the Hulk, whose indestructible strength manifests as the personification of his anger. Recruited by General Thaddeus E.
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"Thunderbolt" Ross, Banner was accidentally exposed to the radioactivity of the Gamma Bomb he had designed when protecting the life of Rick. Bruce Banner, more commonly known by his alter ego the Hulk, is a fictional character in the Marvel Cinematic Universe (MCU) media franchise originally portrayed by Edward Norton and subsequently by Mark Ruffalo -based on the Marvel Comics character of the same name. Banner is depicted as a genius physicist who, after a failed experiment to replicate a super soldier program using gamma.
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In Hulk: The End, it starts with Bruce being over 200 years old and wanting to die, but Hulk won't let him. Hulk's healing abilities also works in Banner, but to a lesser degree, allowing him to live much longer than a normal person. Bruce Banner is slowly losing the perks of Hulk's immortality.
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After dying in The Incredible Hulk #14, Banner is sent to hell, from which it's becoming harder and harder to leave. Mystery surrounds this phenomenon, with speculation surrounding the closure of the Green Door or the creation of an all. The Hulk can but can't die.
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In a certain comic Hulk (Bruce Banner) kills Red Hulk (or Rulk). It proves that he can die but only by someone of equal invincibility such as Hulk vs. Rulk.
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By Avengers' logic he is invincible because Banner shot himself in the mouth and I quote "the other guy spit it out," so unless a godly or equally invincible force is acted upon the Hulk, he is unkillable. I would definitely think not,in the House Of M event Bruce Banner is placed with a hypnotic suggestion to sleep,when he is about to get killed he transforms into Hulk and prevents getting.