15 DEADLIEST Comic Book Assassins

Elektra's fighting skills are so exemplary, SHIELD ranked her as an Omega threat, which is the same threat level as the Incredible Hulk.

Elektra became the go-to assassin after she was trained by the two greatest ninja enclaves, The Chaste and The Hand. When she is an assigned a target, she will kill them, no matter what precautions they take. Elektra's kills have become so legendary, some people think she's a myth, concocted to keep criminals in line.

But it's not just supervillains or drug barons that are scared of her. Even the Punisher, a man who has held his own against every criminal conceivable, admitted he wouldn't stand a chance against her.

When he was under the false impression the scarlet-clad ninja was sent to kill him in Punisher: Marvel Knights #27, Frank Castle just gave up, knowing he couldn't take her in a straight fight.