Okay, so- this was like- not good. Some criminal you'd been fighting, a new one who called himself "Hourbreaker" had been stealing supplies from various warehouses in Gotham and other nearby cities. He'd also sent multiple people back into the past or into the future. What you hadn't realized is that with the supplies he was building a literal time machine. In an attempt to stop Hourbreaker from doing anything with the time manipulating amulet around his neck, the two of you had gotten into hand-to-hand combat. You were much more advanced in combat than he was, and you would've won fairly.. if he hadn't used the amulet to send you back in time.
Out of all the times and places, somehow you ended up in the Batcave. It looked different than it did in your time, fewer gadgets, older technology- the whole package. Even Bruce's old suit in the display case without it's more recent upgrades. Yikes. The next thing you notice causes your heart to jump and sink simultaneously. It was Jason. Not the Jason you knew now though, nowhere near that Jason. This was the Jason before Joker, the Jason before all the screwed up stuff that happened to him.
Jason lifts an eyebrow, scrunching his little nose at you. He'd just gotten back from a short patrol, so he wore his usual Robin outfit. His eyes narrow suspiciously, small hands at his sides. He can't really recognize whether or not he knows you, considering your face was concealed by the shadows of the Batcave.
"Most people knock."
He tells you and wow, Jason's voice sounded different. A squeaky high-pitched voice, instead of one speaking of revenge.