Board Thread:Spoilers!/@comment-25551215-20160315233708/@comment-24674051-20160521220141

In the original "Strange Tale of Dr. Jekyll and Mr Hyde", Hyde was indeed the evil alter ego to Jekyll (though Jekyll creating the serum that produced Hyde int he first place puts him in a questionable state as well).

But this is Once, and they can twist as the see fit. Peter Pan as a Villian, the (Formerlly) Evil Queen and Captain Hook as Heros, Maleficent as at least an Anti-Hero. Ursula as a reformed villain. The Miller's daughter (the protagonist of the Rumplestiltskin fairy tale) is a villain. Once is not bound to follow any conventions other than what they choose. Sam may be playing Hyde how he chooses, but that is still going to be within certain boundries estableshed by the writers regarding the direction Hyde will be taking (Hero, Anti-hero, villain, victim, etc). I would watch and see what the writers do with both Jekyll and Hyde, it may not turn out like anyone expects.