The Hulk is known for being one of the most challenging heroes to defeat within the Marvel Universe, but one huge flaw lies beneath his seemingly indestructible exterior that changes everything. Believe it or not, it's possible for certain versions of the Hulk to undergo a game-changing transformation that could make the Avengers' biggest powerhouse more vulnerable than ever before.

In Ultimate Comics: Avengers 3 #2 by Mark Millar, Steve Dillon, Andy Lanning, Matt Hollingsworth, and Cory Petit, a clone of Hulk known as "Nerd Hulk" gets unexpectedly attacked and bitten by the King of the Vampires, which transforms him into one of their kind.

Although the Hulk's healing factor normally prevents him from being susceptible to bites and afflictions such as the vampiric plague, this Ultimate Universe version of the character succumbs to the virus and becomes a vampire. Thus, Hulk has a glaring weakness that even his healing properties can't guard against, and it could be the key to defeating the Green Goliath.

The Hulk's Healing Factor Can't Always Protect Him From Vampirism

As Great as Hulk's Powers Are, One Version of Him Has a Vulnerability

All it takes is a single bite from Anthony to remove Hulk's free will and convert him into a full-fledged vampire, which indicates that he is less invulnerable than most would assume him to be. Thanks to the gamma radiation that granted Banner his power to transform in the first place, the Hulk of Earth-616 is essentially immortal, but not every Hulk can say the same. Earth-1610's Ultimate Universe produced a clone of the Hulk that ed his immense strength with Banner's intelligence, producing "Nerd Hulk". However, this Hulk variant lacked the same abilities as the original, as evidenced by his susceptibility to a vampire bite.

Hulk's healing factor has aided him on countless occasions in other continuities, making this change within the Ultimate Universe a truly staggering one that redefines his abilities. For example, in Incredible Hulk #398, Deadpool and Wolverine's healing factors pale in comparison to Hulk's, which doesn't require time to activate and can him the moment damage is inflicted upon him. Moreover, Hulk has shown that he's immune to zombie bites, but it seems a clone of his isn't immune to vampire bites.

Hulk Becoming a Vampire Exposes Him to Other Major Weaknesses

The Key to Defeating the Hulk Is To Turn Him Into a Vampire, It Seems

Despite turn into a vampire introduces a slew of weaknesses that can make the Hulk easier to defeat, rendering him unusually vulnerable. From sunlight to wooden stakes, if the Hulk were to undergo a vampiric transformation, he could be at risk of losing his invincibility and getting taken down by monster hunters. The Hulk's healing factor isn't foolproof, and his potential to become a vampire proves it.

Ultimate Comics: Avengers 3 #2 is available now from Marvel Comics!