PREPARED BY JASPER SITWELLEdit
S.H.I.E.L.D. PERSONNEL BRIEF: Vapor
Classification: Professional Criminal
Powers: Cosmic rays gave Darnell the power to transform herself into a variety of gases. She favors the poisonous varieties. Unlike her brother, Jimmy, aka X-Ray, who shall ever be an amorphous human-esque blur of radiation, Vapor can return to her solid, human form - though she’s probably incapable of maintaining it for any length of time. SHIELD hasn’t observed her in a non-gaseous state for too long, so either she can’t help reverting to her misty form or else she really enjoys it. Perhaps both. Because she actually transforms into gas, she can be neutralized using science (for those who happen to remember the chemical properties of obscure gases) or even a good strong wind.
Known History: Along with her brother Jimmy, Darnell was selected by Simon Utrecht to act as life support engineer on his infamous and abortive space flight. As the lone female on the mission (not unlike Sue Richards on her husband Reed’s similarly blighted space journey), Ann reacted to the overdose of cosmic radiation in a manner no one could predict.