I watched a couple of those a while back, actually, when Red X showed up in the background of TTGO! (my daughter loves that show). That's what put the idea in my head, actually. Seemed like an interesting character, and I like the idea of a thief who matches Dick's ability but isn't a some wild, huge threat to all that is good in the world.
I think if I had my way about it, I'd keep the mystery going indefinitely. Better to not know who is behind the mask. Sorta akin to Logan's origin being shrouded in mystery (I feel like once that was revealed Wolverine lost something).