Superman heard Robin's voice, and glided towards the Bat-Plane. He also picked up on the sound of her rapidly increasing heartbeat, but it certainly didn't take someone with super senses to realize that Robin was excited. Her small frame was in stark contrast to the towering Man of Steel, and Clark could see the awe-struck look on her face as he hovered in front of her. 

"Nice work up there," said Superman, extending his hand, "Looks like we might need to make some more room on the Watchtower."

Clark wondered about where this new Robin had come from. The original Robin, Dick Grayson, had grown to become a good friend of Superman's. In fact it was Clark that had inspired Grayson's current superhero identity, Nightwing. Clark once told Dick a story of two superheroes that lived on the planet Krypton, called Nightwing and Flamebird, who were not unlike Gotham City's dynamic duo. After Dick had a falling out with Batman, he left the mantle of Robin behind and started out on his own solo crime fighting career, taking the name Nightwing as an homage to Superman's home planet. Based on what Clark had seen so far, the new Robin was every bit as good as Dick Grayson had ever been.