There are no bad characters, just characters that no one has spent far too much time thinking about how to make work. I intend to fix that.
Val Kaliban, better known as the Spook, made his first appearance in 1973's
Detective Comics #434. His plan had a certain insane elegance to it. In his former life, Val Kaliban had been the architect responsible for designing Gotham City's new state of the art prison which he honeycombed with secret passageways planning on breaking prisoners out for a huge payday. I say he did this in his former life, because he was discovered by his partner, who the Spook then murdered, and was subsequently executed for the crime. Not one to let a little thing like the death penalty stop him, he hypnotized another prisoner into getting executed in his place (that's right, he's not just an evil architect, he's an evil architect who's mastered the art of hypnotism). Having escaped justice, the Spook then spent the next decade literally living underground, using his evil architecture powers to retrofit an abandoned subway station under the prison he built, as well as booby trapping much of the city (he even got to steal the Batmobile with a 'now you see it, now you don't' trick). He then used a bunch of gadgets to make himself appear to be a ghost (so for those keeping track he's an evil architect, with hypnotic powers, and advanced illusion technology) and started selling "escape insurance" to the criminals of Gotham. Of course Batman doesn't believe in ghosts (despite having teamed up with
angels,
demons, and oh ya,
ghosts) and quickly figures out the Spook's whole deal and captures him. You would think that Batman and the police discovering the network of secret passage ways in the prison would end it as a plot point, but it reappears in most of the Spook's subsequent appearances (with the noted exception of one
Batman: Legends of the Dark Knight story (#102-104) where he's instead an insane ex-CIA agent who actually believes he's a ghost). He then largely faded away before ultimately being beheaded by a League of Assassins trained Robin (which is a sentence that can't have been typed too many times).

The Spook is an interesting case in the annals of D-List Batman villains. His MO is actually pretty good, a guy preying on the cowardice of criminals by using gadgets, parlor tricks, and advanced preparation to appear supernatural is a frighteningly good foil for Batman, and his costume is certainly serviceable. He even does yeoman's service by helping to explain why no one seems to be able to stay locked up in Gotham City. By rights he should be a solid B-Lister like Scarecrow and Mad Hatter, or at least be popping up with the regularity of the assassin Deadshot (I love Deadshot too, but come on, there are other assassins out there), so why doesn't he? The answer is pretty simple, the Spook's backstory is bizarrely limiting. Having the majority of his gimmicks come from his skills as an architect (and indeed from having built a specific prison that has already been identified by the police) pretty much leaves him with nowhere to go. The ex-CIA angle certainly explains his skills more, but I'm tired of every Batman villain being insane. And frankly, after going to all the trouble of faking your own death and setting up elaborate illusions to make yourself seem like a ghost, it seems pretty wasteful to blow that rep by meeting your clients in alleyways and giving them a beeper to page you if they get into trouble.

Val Kaliban and Benjamin Yates were the best extraction team the Agency had ever produced. They got in, secured the subject, and got out all without leaving a trace. But the problem with being the best was that it meant they were in high demand, and after seeing more than anyone should have to, they were done. But it wasn't exactly the kind of job you just walked away from, so they faked their deaths, mission gone wrong. And then they disappeared into the deepest cesspool they could find, Gotham City. They knew even before they got there that between the street crime, mobs, and the costumed set, there'd be plenty of demand for their particular skills. Still, they needed to keep a low profile, and that's when they remembered they remembered the number one rule when dealing with lowlifes, "criminals are a superstitious and cowardly lot." And in Gotham that was clearly doubly true with all these stories swirling around about the so-called Bat-Man. It was almost painfully simple, start a few rumors, a few psyops tricks and pyrotechnics, and suddenly altars to the Spook were popping up in cemeteries and condemned buildings all over the city. If your offering was accepted you were protected, if it wasn't.....you should probably leave Gotham. Oh occasionally one of them would be caught by the Bat, but it never took either of them long to escape again, and the other simply fostered the legend until their partner returned. Gotham was a haunted city, and the Spook wasn't going anywhere. Happy Halloween!