As a subject matter expert in comic book lore, I can tell you that Deadpool, whose real name is Wade Wilson, is a popular anti-hero from the Marvel Comics universe. While he is known for his regenerative healing factor, which is one of his greatest strengths, it also has a notable weakness.

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Deadpool possesses a superhuman healing factor derived from that of the mutant Wolverine that allows him to regenerate damaged or destroyed areas of his cellular structure at a rate far greater than that of an ordinary human. ... Unlike Wolverine's natural healing factor, Deadpool's is mentally driven to a partial extent.read more >>