Whitney as Catwoman.
Not sure if Catwoman really carries a mace, but if she does, surely it must have a kitty face on it.
Kids, this is why we don't wipe our brushes on our sketchbook pages - you might need that space later.
Chie from Persona 4, apparently. I don't really know my videogame characters!
Elektra, of course. Since the costume's based on a leotard, it keeps reminding me of Kate Bush, who would make a very strange ninja assassin.
Apparently not Goku - it's Guy from Final Fight and Street Fighter, but the blue undershirt made me think of Dragon Ball instead.
More Cat-bondage. You're welcome!
A Megaman homage. Since I don't know what Megaman's costume looks like, you get a blue biker with a ray gun instead.