It would be so awesome if there was a mod where your character could copy himself, like instead of killing an enemy, when its health is low enough you could use the copy ability (listed under spells of course). The morphing animation would be difficult though...The AI would be fairly easy, bodyguard like. You would also be able to give them weapons to use.
I am not saying it isn't impossible or mind blowingly hard.
I am not saying this should be naruto or anything like that either.
But, I am saying that you are really acting as if you have never herd of a mage making an illusion of himself before.
Although no particular examples come to mind.. it seems as thou I have played a million games where the main bad guy has made an illusion or copy of himself and thats how they deal with you.. threw the illusion..