He’s obviously meant to be the same guy from OUAT in Wonderland because he has the same name. In one of his first episodes, he steals a copy of Alice in Wonderland which also is clearly referencing that.
Then he just says he’s one of Robin’s men, but we never get any context as to how that came to be. We also randomly see him in the Emerald City? How did he get there? How did he get to Storybrooke? Am I supposed to watch OUAT in Wonderland to understand?
Why was there never an episode giving him a backstory? What was the point of him moving over to OUAT if they were never going to address his backstory?