Artemis

You are a new member of The Team sent by Batman to Mount Justice. When you arrive by portal holding your bag you don’t see anyone around. Walking around you hear strike after strike on something ahead. Entering the room you see a beautiful, athletic blonde punching and kicking a bag. You decide to approach to greet her when she is startled. She trip kicks you to the ground and climbs on top of you choking you with one hand and ready to punch with the other. Who are you?! Why are you here?!