Don't misunderstand the Whirlwind thing. He wasn't KILLING those women. He just derived a sick pleasure from dressing them up like Jan and using his powers to beat them into submission before sex. (Yeah, that's pretty screwed up.) But, yeah, Whirlwind's been a killer since the 1970s, at least in intent... he tried to assassinate Hank and Jan at home once, and then steal their fortune with will fraud. The man's just a real jerk. Murder isn't beyond him, except in the fact that he's not been very successful at it.
Yeah, Constrictor and Taskmaster seem villainous again. I'm pretty annoyed by it too, but Constrictor, at least, hasn't had a speaking line yet. Taskmaster, in fairness, wasn't there to fight to the death, but it seems to be the rule of the bar, a place called the Hole, which, near as I can tell, is making its first appearance here.
The following villains are in the issue:
Max Fury (leader)
Black Talon (Samuel Barone)
Brothers Grimm (Percy and Barton Grimes)
Lady Stilt-Man (Still the stupidest code name in history.)
Princess Python II
Ringer (Keith Kraft)
Squid (Don Callahan)
Whiplash (Anton Vanko)
The original, or another one? The original has been dead for a LONG time. God, they really go all out. Whirlwind seems like a pretty regular villian.