Source: comicvine.gamespot.com

6. Copperhead

Look, master contortionists don't have a lot of easy work open to them, okay? Like, how many master contortionists do you know of who have normal jobs? How many jobs are "contortionist friendly"? Pretty much just crime and murder.

Copperhead started as a contortionist murder-robber who liked dressing up like a snake for unexplained reasons. I'm assuming it's a sex thing, but I'm not one hundred percent sure.

In his first caper, Copperhead dressed up like an old man and stole a tiara. This is the most high profile and respectable of heists. Here, Copper had his face punched in by Batman, Batgirl, and Wonder Woman, and took a break for a while. He popped up again as a member of the Secret Society of Super Villains, and then in Europe, where he tangled with the Elongated Man.

Eventually, snake bro got called up by Neron and sold his soul for some upgraded powers. Aaaaaand then Manhunter blew his brains out.