User blog comment:JuniperAlien/Artemis...do you trust her?/@comment-67.70.0.140-20110928222425

I think the mole is Red Tornado because in the comics he was designed to infiltrate the Justice League/Justice Society to kill them but he was reprogrammed. In the episode "Alpha Male" the team gets a new "den mother" so it is implied Red Tornado is MIA. (Missing In Action) Also if you read the description for "Humanity" the Team thinks Red Tornado is the mole and they track him down.