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Marvel Cinematic Universe Wiki
Marvel Cinematic Universe Wiki
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"He discovered that there were universes stacked on top of his own..."
The subject of this article is set in an alternate universe that is encompassed by the Marvel Cinematic Universe franchise. Its events are not considered part of the main universe's timeline.

"That could have gone better."
―Vapor after the U-Foes' battle with the Hulk[src]

Doctor Ann Darnell, better known as Vapor, is a member of the U-Foes. She is the sister of X-Ray.


"I'll share the rewards with those who contribute. Will you help me, Doctor?"
"I'm in. And please call me Ann."
Simon Utrecht and Ann Darnell[src]

While Simon Utrecht managed to gain the support of Michael Steel and her brother Jimmy in his attempt to recreate the Bio-Tech Force Enhancement Project using atmospheric radiation, Ann Darnell was skeptical, as the experiment had only been successful once. Utrecht insisted that the energy he was using was more stable than Gamma Radiation and promised to share the rewards with his fellow contributors. At this point, Darnell agreed to help and insisted that Utrecht call her by her first name, suggesting an attraction between them.

Once the experiment started, Rick Jones alerted Bruce Banner that the United States Army were on their way to arrest Utrecht. As the Hulk, Banner reached Utrecht Laboratories where he found an antennae on the roof that was generating massive amounts of radiation. He destroyed the antennae and the building, but Darnell and her fellow contributors emerged from the wreckage as the super-powered U-Foes. They decided to teach the Hulk a lesson and fought against him. They were defeated, but vowed to kill the Hulk if he got in their way again.[1]

Powers and Abilities

Vapor has the power to transform her body into gas.







External Links