Aric The Red Raven, Iconic Vigilante- they feel very different indeed. Found in the Ultimate Intrigue deck.
Looked it up and that is different! I'll probably pick it up. Thanks!
Also, check the blogs on this site for the Hell's Vengeance decks 1 and 2 previews - to see if the villains are "different" enough for your taste.
I realize I'm not being too helpful with my definition of "different" or "unique" so I'll try to explain a bit better.
I know at some level that every character is unique, but we're about to get a Core Set that will be required to play all the expansions after it. There are 12 characters in the set and they have to be made with future sets in mind. So, I think it's a fair assumption that those heroes will largely feel kind of generic in terms of their powers. And that's fine. But I'm looking for characters that are the opposite: ones that play so differently that I don't have to worry about characters from the Core Set fulfilling their roles.
I'll check out the Class Deck blogs. I wasn't sure where to start other than to go through the wiki, card-by-card. That's why I tossed it out to the community.