The She-Devil Of The Coliseum is the boss of the 5th stage of the arcade game Metamorphic Force.
She is a scantily clad, pink skinned devil woman who the player fights in a coliseum.
When the player enters the coliseum she suddenly appears and states that she will enjoy defeating them, then the fight begins.
Her methods of attack are mostly punching and kicking, but she also loves to try and crush the heroes under her ass with two other moves. One where she leaps up and tries to land on the heroes with her ass, and another where she rams her ass into the heroes face and then lands on top of them and sits on them.
She also lets out an evil laugh every time she hurts or kills the heroes.
When she is defeated she raises her arm to the sky and cries out "My Lord!" to the game's final boss, before collapsing and dying.
Obviously as a video game boss whether she successfully kills or not is dependent on the player, but she has a few different ways of doing so with her body.