I'll post these little at a time. For my two villains, I've really never profiled them yet. It's all just been in my head. So it might take me a little while.
Name: Sesstra
Age: Young Adult
Appearance:

Occupation: Villian
Weapon: Her various "arsenal" of toxins, poisons, etc.
Power: She can shapeshift into any type of snake. She's also an expert on poisons, venoms, sleep potions, and paralyzing toxins. She can synthesis any of them in any of her snake forms.
Personality: She has a nasty streak a mile wide. She loves to (literally) sink her teeth into anyone she chooses, or anyone who gets in her way. She'll work for a steep price.
Past: She used to forage a living in the under levels of a huge city. She became leader of a large gang, and the symbol for said gang is still a Cobra. In the end someone discovered her ..."talents" and took her off planet. Now she works for "them".
Quirks: She likes any dangerous substances.
Theme song ((hey why not?)): Faint by Linkin Park