This is more of a "hopeful" theory as I just don't think Lucasfilm has the foresight to pull something like this off. So here goes....Apologies if someone has already posted this theory (I haven't seen it yet) but I think Marrok is going to be played by Hayden Christensen. After watching EP3 of Ahsoka I had a crazy idea. I was thinking of the Thrawn books and how Luke had to deal with an evil clone of himself. Cloning obviously being a major part of Star Wars lore and history, why not incorporate it more into the Mando-Age. So it was already announced that Hayden would be returning in Ahsoka. I think everyone just assumes as a Force Ghost or Flashback. But what if they actually bring back Hayden as a full time cast member as a experimental clone of Anakin Skywalker himself. Ahsoka then would discover this during a fight and have to deal with the ramifications of seeing her former master again. A story line could be dedicated to bringing the clone back to the light side. He wouldn't even need to be called "Anakin". Just like the Clones during the Clone Wars, they all had their own identities and personalities. This could be the same for Anakin's clone. The fun part of this could be bringing Hayden back to Star Wars to essentially play a different complex character. Talk about an OH CRAP moment! Ahsoka with an uppercut of her lightsaber cuts Marrok's helmet in half to reveal Anakin's face.....Thoughts??