10. Lady Deathstrike
Lady Deathstrike is one of Wolverine's greatest adversaries, second only to Sabretooth in terms of notoriety. She actually first appeared in a Daredevil comic, only making the transition to the adamantium-laden Deathstrike in the pages of Alpha Flight some three years later.
Were it not for the fact that she has giant, ridiculously long adamantium fingers, Deathstrike probably wouldn't even be that scary. Sure, the cybernetic enhancements and the insatiable bloodlust are both pretty creepy, but the long, protruding instruments of torture are definitely what make the look.
And let's make no mistake here either - it is definitely the fact that these are A: fingers, and B; nightmarishly long that make Deathstrike so unnerving. Granted Wolverine's claws would probably seem pretty terrifying in the wrong hands, but at least he would still have hands at the end of the day.
With Deathstrike, her adamantium fingers are an extension of her natural anatomy, and that is frankly horrifying.