Little Miss Naughty (Superhero AU)

In the Superhero AU, Miss Naughty has the power to generate and manipulate poison and acid.

Origin Story
Miss Naughty was born with her powers, and raised on the evil side in a family of supervillains. She always grew up wanting to do good to rebel against her parents, but despite contant attempts to use her powers for good, they always ended up causing harm instead, causing her to feel conflicted about her morality.

She finally became evil at age 14, when she accidently melted her entire school while trying to fight back using her powers against some bullies. While luckily no one got hurt, seeing the severe damage she has done, she assumed that her powers can never be used for good and turned completely towards the dark side.

Personality and Morality
Miss Naughty is a supervillain, and the main threat that the heroes usually face. She is leader of the villains and usually bosses other villains around. Her main goal is world domination, though she likes to steal valuables as well.

Even though she knows that she's evil, she usually never commits crimes just for the sake of it, as she finds it a waste of time. She usually has a reason for her crimes, even if it's something as trivial as stealing a precious diamond. She is competent and intelligent when it comes to carrying out her schemes and is the most dangerous villain out there, ranking the top of the most wanted criminals in the world.

Despite her deadly powers, she almost never has any desire to fight, and instead sends a right-hand man such as Mr. Rude to do the work.

Powers
Miss Naughty has the power to generate and manipulate poison and acid. Her breath, sweat, and spit are dangerously toxic, and she can voluntarily secrete an acid from her skin that is corrosive enough to melt steel. She can also control poisonous plants and fungi. She is immuned to virtually any type of poison including her own, and her body is durable enough to withstand acid.

She has fangs which contain a powerful venom that can cause excrutiating pain, and occasionally death if not treated.

Weaknesses

 * Any non-physical attacks, most effectively psychic attacks