I dont know if you like Star Wars but i do, so here are some evil Sith girls.
-Dark Kreia: She was a master of telekinetic lightsaber combat (she used 3 ors more at the same time) very powerfull
-Dark Ventress: She was really violent and killed a lot of people
-Dark Talon: She was a really good assassin she killed 2 master jedi at the same time and killed her teacher in a single blow
-Dark Lumiya: She was cold and cruel
-Dark Aleema: She was a sorceress and master of illusion and other spells
-Dark Lashowe: She was unfriendly for exemple she said things like: Dont talk to me unless you amuse me with a joke or else i will kill you...
-Dark Lomi or Dark Lomi Plo: She was a spellmaster, she could create a big spiderweb that can dice her opponents into pieces
-Dark Phobos: She was vicious and good at messing the mind of he opponents, for exemple she transformed into her victim's friend so she can backstab him
Please tell me wich one you chose even if its not from my list im only curious, i know the explanation of each name i gave you were kinda useless but i was bored and to be honest i had fun writing this
bye bye