It’s entirely possible that Butch’s original identity won’t ever return following his bullet-to-the-head transition into Solomon Grundy, however.
Ed’s Riddler personality will still be intact, somewhere inside him, but it’ll be muddled by that whole “being encased in a giant block of ice” scenario.
And though it seemed like Lee would exit Gotham City somewhat safely and virtuously after being cured of the Tetch virus, she’ll apparently jump right back into the swing of things, and not without her recent antagonistic side intact.
One of my favorite aspects of Gotham is how the show sometimes feels like the most epic piece of fan fiction ever, and that certainly fits into this pretty insane trio, which features three characters that will basically be the complete opposites of the characters they were introduced as.