This character is a dominatrix.

The dominatrix is a female archetype which operates on a symbolic mode of representation, associated with particular attire and props that are drawn on within popular culture to signify her role—as a strong, dominant, sexualised woman—linked to but distinct from images of sexual fetish.

This trait applies to both paid professionals (pro-dommes) and characters who habitually adopt a dominant persona in BDSM activities. It should not be applied to characters who cosplay as a dominatrix for a single sex scene, or who are the dominant partner but just act casually and don't assume a persona.