One of Batman’s earliest enemies was a psychiatrist with a dark side.
Sure, Superman’s pest from the 5th Dimension is a bit of a pain, but Superman is not the only hero with a pest from the 5th Dimension.
One of Batman’s earliest enemies keeps rising from the dead, and that’s his whole deal.
Batman has this enemy who is a half-human, half-whale woman.
Maxie Zeus had this girlfriend once…
Plenty of Silver Age heroes had sidekicks. Few were as weird as Zook.
I’m not sure she actually went away, but regardless, here’s Bluebird.
The League of Shadows attack Gotham, and Batman’s team of heroes may not be able to handle them.
Batman once had a bodyguard.
Wonder Woman forms a branch of the League to combat magical threats, and there’s a doozy on its way.