Superhero Proving Grounds

Kiara is a normal cute girl who works as personal trainer into a gym.
She spent most of time working out to build a strong body but despite her muscular body sha has a sexy look.
One day during an excursion she fell into a river, the flow carried her away, she thought to drown when she start to sink.
After an indefinite time she woke up into a dark cave, but a ray light came up from the top, she realized she was into a well. But what really caught her attention was an Athena statue wearing a black tight long sleeves bodysuits with leather stripes on thighs.
The only chance to escape from there was climb up across the well, a desperate attempt but the only one possible. She removed her wet clothes and weared the Athena suits. As she did she felt a incredible amount of strengths flow through her muscles, her skin looked harder but the biggest transformation was into her mind, her face switched into an evilish one, her eyes narrowed like if she had a mission only: eliminate good in any crazy way she can.
Due her new strength she easily escaped from the well.
Since that day when she wears the black suit she switchs into Evil Kiara, her goal is beat and capture heroine, heroes and related to switch them into bad. She uses any trick she can to do it, there is not a logic on her actions she only follow the madness.
Evil Kiara has an incredible strength, she can easily lift a car, her muscles are hard like steel able to bear normal weapons bullets, she has a good wrestling and martial arts background.
She lives into a big mansion outside the city but uses abandoned buildings to trap her victims.