The following article contains spoilers from "Call It" from Batman: Urban Legends #19, on sale now.
Two-Face may be making a comeback as a villain, but "Call It" from Batman: Urban Legends #19 (by Joey Esposito, Mikel Janin, Jordie Bellaire, and Clayton Cowles) took the opportunity to demonstrate just how much of a tragedy it is that he is forced to deal with his darker self at all. An old conflict with Batman saw the caped crusader elaborate on what goes through Two-Face's head in the seconds between his coin being flipped and its landing.
The answer is more depressing than anyone might have guessed. Though Two-Face needs the coin to function at all, doing so leaves him feeling stymied. In a binary world, he must strictly follow one path or the other, leaving little to no room for finesse or greater ambition in what he could accomplish. Two-Face may pretend there are only two choices in any given situation, but deep down he knows there are infinite paths he could take, ones that his fractured mind will never allow him to consider.
From Two-Face's perception, there is only ever black and white, good and evil, right or wrong. It's a world of division with no room to appreciate the gray areas that could change how a situation may be viewed. In his kind of world view, one would be confined to a very limited set of choices, not even being able to conceive the greater possibilities that life has to offer.
This is Two-Face's plight. The part of his mind that belongs to Harvey Dent lives in the mere seconds before his coin drops. It affords him the chance to dream about the many other ways he could live his life. What he could do, what he could have been, what he should have been. However, those seconds are nothing more than a fantasy, one he is well aware will never come true. It is telling though, that some part of him can still dream of having more than two options before him.
It drives home how tragic Two-Face's existence must be. Yet, he has no other choice but to live with it. His mind is no longer capable of considering the possibilities that exist beyond the system of chance he adheres to, but some part of him still longs for that freedom. Ultimately, Two-Face knows he is trapped within his own mind. Whatever grand scheme he might hatch centered around his obsession with duality will always be hampered by a lack of nuance or ambition.
This is made infinitely worse by those seconds in between where Two-Face can recognize the possibilities but is still powerless to act on them. He is a slave to the coin and the two, often horrible, choices it presents him with. So, his return to villainy thanks to Batman's mysterious new enemies is incredibly sad. Harvey had made so much progress trying to get back to a good place, but now he has been thrown back into that mental prison where all his choices and freedom have been stripped from him.