Source: writeups.com
8. Abra Kadabra
(Flash, DC Comics)
I friggin' love Abra Kadabra. The guy is an all-time weird DC villain.
Abra was from the Sixty-Fourth Century, in which science was so advanced that no one cared about magic anymore. This presupposed that people EVER cared about magic, but whatever. Abra wanted to be loved, so he stole a time machine and decided to go back in time to a period when "magicians were celebrities". Weirdly, he didn't wind up as a supporting player in Criss Angel: Mindfreak, but instead showed up in the Silver Age to menace Barry Allen.
He tooled around there for a while, taking turns being in future jail and getting punched in the throat at Mach 3, until Barry died in Crisis and Abra had to fight his successor, Wally West. Eventually, Abra signed up with the Demon Lord Neron for a power boost, and became a bigger threat. Although now he looks like a hamburger someone only cooked one side of.
Eh, fair trade.

