Psycho-Man thrives on the misery of others, so he developed technology to stimulate it.
Mr. Hyde is probably more demented than evil, but he so delights in the pain and injury he inflicts that I still think that he qualifies.
Selene thrills at consuming life, and terrifying her victims.
Sebastian Shaw is not only ambitious and avaricious, he's vindictive, spiteful and ruthless.
Domammu simply is evil incarnate (or one form of it anyway).
in no particular order:
The Red Skull
Selene
Bullseye
The Purple Man
The Shadow King
Carnage
Of course then you have the Hell Lords which are in a different category all together. Evil is what they do. It's what they're supposed to be. Is it really evil though to be what you're made to be?
Mr Fear by Brubaker was completely evil. Did what he did solely to ruin Matts life, regardless of what happened to himself.
Matt Murdock's cooler twin brother
I'd give the Devil benefit of law, for my own safety's sake!
Thomas More - A Man for All Seasons
Interested in reading Daredevil? Not sure what to read next? Why not check out the Daredevil Book Club for some ideas?
I would also like to add Arcade. Between Avengers Arena and the current arc in Spiderman, I just someone would end him.
Sure, Sinister wants knowledge, but he goes about it in the most disturbing ways possible, often to his detriment.
And yes, his whole thing with Scott.
And didn't he blow up a bunch of kids for basically no reason?
The Punisher does not shower.
I don't blind date I make the direct market vibrate
Carnage. Though I think he is probably mentally unwell.