Just finished reading Batman: TDK and while the story was going nowhere, the usage of the Scarecrow I actually liked, they did actually do something interesting in it. Tim Drake Robin, this one:
Made an appearance temporarily in the delusions that Bruce was enduring and while in the 90s, it was very secure that Tim was a teenager, but in this appearance, Tim in this look was shown extremely young, about 10. I wonder how that plays with the continuity that is being tried to be contained within the New 52. The only hero who was in service before the 5 year mark was Batman but Jim Lee admitted it wasn't that much longer than the rest. If I wasn't wrong and Tim was supposed to be that young that means that he would have had to have gone through his time with Grayson and Jason almost lightning fast not to mention that he would have had to have taken on the Robins each around him being 20 and Grayson would have had to be have been a teenager in his mid teens for it to make sense.