Sombra Negra means "black shadow" in Spanish, proving that even the coolest vigilante names in the world can still be painfully redundant (nobody wants to be confused with the magenta shadows, after all). So what did these guys do to earn the top spot on our list? Oh, just target one of the most powerful criminal enterprises in the fucking world.
The mob, you might suggest? No, not the Italians. Once you've been around long enough to be on the Simpsons, you're really not that dangerous anymore. No, kids, the particular enterprise Sombra Negra targets is none other than El Salvador's own Mara Salvatrucha, otherwise known as MS13.
MS13, for those Cracked readers not in the know, are fucking scary criminals. They've taken over border towns all along the Rio Grande, and have overrun Laredo, TX so thoroughly that not even Texas' own Rangers will go there. In other words El Salvador's Black Shadow is the only group in the world with big enough balls to take them on.
Unlike the rest of the vigilantes on this list, not much is known about Sombra Negra other than they're a group of police and military personnel who like to execute their blindfolded targets with pistols. In 1995 it was claimed the group had executed 17 people.
Why hasn't the score been updated in the 13 years since? It's because in some ways we know even less about Sombra Negra than we do about MS13 itself, which is really saying something. If you're more underground than the underground criminal enterprise you're stalking, you sir are one bad motherfucker. Black Shadow, we formally apologize for making fun of your name.
Learn to do your part in fighting evil with our practical guide How to Punch Oasis in the Face. Or, for people who had the powers, if not the insanity and desire, check out 7 People From Around the World With Real Mutant Superpowers. Or for people whose parents at least had the right idea, check out The 9 Manliest Names in the World.