Board Thread:General Discussion/@comment-27255656-20170305162826/@comment-26882656-20170305165718

Mercury has been trained as an assassin from a young age, is smart where he can anaylze his opponents while battling them and has no problems being a murderer while Emerald was a street rat thief that can't even go one simple battle without using her semblance. Seriously, watch the Amber battle. Emerald is horrible at fighting. Her only usefullness to Cinder is her semblance. You can even see how Cinder acts towards her.

As for the actual fight... I've had some ideas in my head and a lot of them end with Merc knowing Em enough to know her attacks while Em thinks that her semblance is enough to get by.

And if the fight would take place in an open area Mercury would just use his wind dust tornado attack to destroy Emerald wherever she was standing, even if she were using her semblance to hide her true position.