User blog comment:VioletteNoire/I HAVE HAD ENOUGH WITH THIS!/@comment-184.153.54.144-20120107162042

I can see a few characters being the mole. Artemis unwillingly being the mole, slipping secrets to her father in order to stop something bad from happening that he's holding over her head.

Superboy unintentionally being the mole. Perhaps there's something implanted in his head sending info to Cadmus and the Light, or it programs him to give them info and have him forget about it.

One of Kid Flash's souvenirs is bugged. He's had that robot eye since the beginning, who says it's inactive? Or Cheshire's mask even?

M'gann's the mole. She's lovely and sweet, but what do we REALLY know about her? She's a shapeshifter, she could turn into anyone and visit the Shadows.

Or there is no mole. They just wanted to throw them off, and said there was. If there was a mole, why the hell would they TELL them they had a mole?