User blog comment:ScoobycoolDoo/Who's the mole?/@comment-24.131.105.61-20111119225139/@comment-3465526-20111120043453

Could be Robin -- for one thing Cadmus took clone samples from all 3 sidekicks and were intending to duplicate their memories and substitute the clones as sleeper agents (presumably using those telepathic G-gnomes to extract the memories -- like the one that was hiding in the Mount Justice cave with no explanation of how it got there from Washington DC.

My problem with clone-Robin is that I can't imagine Batman doesn't suspect clone replacements, demonic impersonations, and mind control every night and has some way of checking.

Evil/Clone Kid Flash seems to be ruled out by the view from inside Fate helmet. But my money is firmly on Kaldur. That mole clue from Sportsmaster was for Red Arrow's benefit to prove Kaldur was above suspicion.