Most of the Batfamily had a super, if not share one, but not Duke, yet. You had come to the main timeline as Wally brought you back. Your timeline was literally falling apart after all, you ans Duke met later, and once you did, you connected instantly. He rather enjoyed you carrying him around as you fly

"You think your version in this timeline, like, never left Krypton? Wait, that depressing, don't answer."

Duke asked as you flew in the sky on your way back to Gotham from a mission