I have probably over....30+ Characters? I'm working on making a comic franchise with all of them; but the main ones I love to use with my Transformative works are from a villain organization called the "Black Dawn", A few of the characters are:

Midnight (That purple haired girl with the heart tattoo on her cheek), She's an assassin who uses a magic green amulet that lets her put victims under hypnosis, she's a bit of a goth and really moody; she is also able to use dark magic, but it's effectiveness is based on the moon cycle (Full moon being her peak, and new moon being her weakest); but even if her dark magic is weak, she's still a formidable opponent with her katana, known as the "Edge of Sanity"

Black Spade (The Pink haired clown girl), She is from [REDACTED], and is able to shapeshift (her eye color stays the same) and teleport (With a multi-dimentional ring, similar to the Pokémon Hoopa), And occasionally 4th wall breaks (I made a concept a while back of her using the comic panel's border to pull herself up after being knocked down by the heroes); and with her magical scythe, called "The Last Laugh", she is able to transform others into objects and creatures; she has a bit of a sadistic personality and loves to cause chaos whenever she seems fit, and see others as her "Playthings", especially with my hero protagonist(s)

And Leveena (The Thicc Dark skinned girl with the sparkly blue hair) She's a super greedy singer and a siren who's able to change between siren and human, shes able to use Hydrokinesis (basically waterbending), and is able to petrify her victims to gold (Medusa style); and When in her siren form, shes able to turn invisible, with the only thing still showing being her anglerfish lantern; but even with that small weakness, its hard to keep up with her in her aquatic domain, especially in the pitch black ocean depths...

Thanks for your question!