I also considered Solomon Grundy, another favorite, but was pretty set on Frankenstein." Well, there's a lot to unpack there. Starting off with Man-Bat who is a beloved, if deep-cut, Batman ...

When his luck seemed to run out at the end of Season 3, the powers that be retconned his character into one of Batman's most famous foes: Solomon Grundy. Still, there's no guessing what comes next ...