assertive
To state, or satisfy ones needs with confidence, and authority. A character with an assertive personality knows exactly what they want, and is not afraid to tell a character bluntly what they desire. An assertive character usually prefers being the one in control of a situation, often taking a position of dominance both in romantic situations, and sexual ones.
This tag may be split by gender. This trope is more commonly sexualized for feminine stereotypes.