OK, thinking about the lion tattoo thing a bit more…
I wonder if maybe they’ll show Oz flashbacks involving Lion, Scarecrow and Tin Man, and each will be paralleled by one of our present day characters because Lion, Scarecrow and Tin Man don’t exist in our present day storyline? So Robin’s story will somehow parallel the Lion, and two other people’s storylines will parallel the Scarecrow and the Tin Man?
From the tidbits we’ve heard, I could see courage being a theme in Robin’s story, because it sounds like he’s gonna go toe to toe with the feisty Regina, and that takes some courage.