HailMortys

Elsa Bloodstone is one of a number of C-List Marvel characters appearing in the current Nextwave series, penned by Warren Ellis. She is a Monster Hunter (more Van Helsing than Buffy, though) who is following in her father's footsteps of killing off the evil that populates horror movies. Her powers come from the gem in her choker, which was a gift from her father. With it, she is seemingly immortal, has Super Strength, and is immune to all the bad things vampires can do. And she's British!

I'm quite confident that the latest Mort might cause some controversy, which I'm not necessarily going to try to avoid. Once you've made a guess, then you can criticize what she is wearing.