Ya the first time I heard him say that "I taught you all his moves" I thought it must of been someone that worked with batman and I knew it wasn't cat women because she was being held hostage with the riddler and that it wasn't Robbin cuz he is fighting side with batman and it wasn't nightwing cuz he is seen helping batman and is going to blood gulch and then it must be red hood cuz he is the only Robbin left that batman abandoned and knows all his moves