As a subject matter expert in comic book lore and superhero narratives, I can provide an explanation for Deadpool's immortality.

Deadpool, whose real name is Wade Wilson, is a character from the Marvel Comics universe. His immortality stems from a unique combination of factors:


1. Healing Factor: Deadpool possesses a powerful healing factor, similar to that of Wolverine, another Marvel character. This healing factor allows him to recover from virtually any injury, including gunshot wounds, severe burns, and even regenerating lost limbs.


2. Experimental Procedure: The healing factor was the result of a secret military experiment that aimed to create super-soldiers. The experiment was a combination of Weapon X's program (which created Wolverine) and the慕容氏 (Mourirol), a mutagen used by the Canadian government to create super-soldiers.


3. Cancer: Prior to gaining his powers, Wade Wilson was suffering from terminal cancer. The experimental procedure not only gave him his healing abilities but also combined his cancer with his regenerative powers. This created a unique situation where the cancer cells are constantly destroyed and regenerated along with the rest of his body, preventing the disease from killing him but also preventing the healing factor from fully curing him.


4. Immortality: The constant regeneration of his cancer cells effectively makes Deadpool immortal, as he cannot die from old age or disease. However, this does not make him invulnerable to all threats; he can still be injured or incapacitated.


5. Mind and Personality: Despite his physical immortality, Deadpool's mind and personality remain human, which means he can still experience psychological trauma and emotional pain.

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Deadpool is immortal. the only way to kill him would be through thanos removing the curse, then striking his healing factor with carbonadium OR complete atomization. Although, marvel revealed they will be killing him.read more >>