Nightwing lands right next to Frank with a friendly smile. "Xalgon! Thank goodness you're okay!" He approaches him casually, then bites down hard on his arm. He throws him to the ground and steps on his chest. "Didn't you learn anything earlier? When you turned into that mouse? First off, my eyesight is better than a hawk's. It's not hard to tell when a ten-foot fire-breathing monstrosity just 'vanishes' on the spot. Second, you still smell exactly like Frank. And thirdly, I can feel large bursts of magical energy! I knew instantly that you'd shapeshifted! What's more, the real Xalgon hasn't moved an inch since I met him! He's just stood there for hours without saying a word or moving a muscle!"