Board Thread:Episodic and Issue Discussion/@comment-47881-20131118225102/@comment-5188108-20131119130433

It depends if he means the YJ tie-in comic or comics in general. He could just be responding to the speculation that the villain is an original creation.

If it does mean that, it can't be Grodd, because the Team are still unaware he's evil in the Players arc. Brainiac clearly debuted in the Players arc too. Ditto Kylstar.

What about Talia? We've got league assassins in the game, after all, but no Ra's.