Anna Darnell (Earth-7045)

Anna "Ann" Darnell was a physicist working under Simon Utecht, He, her younger brother Jimmy, and Mike Steel were talked into building a rocket so the four of them can absorb the same cosmic rays that granted the Fantastic Four their powers. However, when they arrived, they were soon brought back down to Earth by an unknowing Bruce Banner. The four were transformed into the U-Foes, with Ann becoming Vapor.

Vapor is simply a cold-hearted mercenary. She seemingly prefers her gaseous form and enjoys using her powers to their full extents. She obeys orders without questions, but actually has a curious streak. She overestimates her immunity to physical damage, making her vulnerable to attacks directed against her gas forms. She holds a weak spot for her brother.

A big problem is that she tends to tell her plans in advance to her foes, which of course gives them the opportunity to act upon that. Her attack plans are rather simple: use tear gas, mustard gas, acid gas or hydrogen gas, whatever fits.

History
to be added

Powers

 * Gaseous Form:
 * Gaseous Form Manipulation: Vapor is capable of transforming her body into any type of naturally occurring gas, either a pure element or with complex compounds, including mono-molecular mists.
 * Flight

Abilities

 * Skilled Engineer
 * Physics

Weaknesses
Vapor is vulnerable to any chemical interaction that would affect whatever form of gas she is currently in. While generally immune to physical attack, she could still be harmed by different types of energy, such as the Hulk's thunder claps and even X-Ray's radiation.

Transportation

 * Self-propelled flight