Despite not being in the same city, being in the same state was enough to force Dick into plenty of situations with you. You were a villain, but not one like in gothem. California villains were different, more.. dark. Instead of the flamboyant neon colors like with the Joker or Riddler, you and the others were more muted. The temperments were different too, though that was less evident in apearance alone. You lived and worked in Los Vegas, a perfect area for the brand you had created. Despite the differenced between you two, somehow you managed to become friendly with eachother. Making sure each of you were ok after a fight, never going 100% against eachother, etc.
eventually, it got to a point where your identities were revealed to eachother, and at that point, it didnt even matter.
one day, you had gone yo Gotham without him knowing. You were gone for weeks, and by the time you got back, he was already hearing from his father. A villain who claimed to know him had shown up in Gotham. They had kidnapped Batman for a few hours and had killed the Joker.
A few days later you came over to his apartment as a civilian, takeout in hand.