From an interview with Giancarlo…
In addition to shooting Season 2 of Revolution, a return to the land of fairy tales is coming for Esposito, who shot a return to Once Upon A Time the week after this interview was conducted. “I’m excited to go back,” he says. “I think we have a character who still is very much in love with the Queen and doesn’t understand why he’s been in the dungeon for so long. I’m excited to be the Mirror. The Mirror, to me, is a little bit slicker than Sidney, and gives us clues into the eventuality of what relationships could be on that show. So, I can’t tell you too much, but I hope to keep returning to that show, if we can have it work out.”
I hope that his reference to being locked up in the dungeon means we’re gonna see him in SB as well as in FTL. Honestly, I’d been worried that his scene helping Regina see Snow waking up would be his only scene, which would have been a bit of a disappointing comeback, but this interview gives me some hope.