...calling Negaduck "the most evil character ever," it's surprisingly appropriate.
"Shot on sight... skinned alive on sight... burned to ash on sight..." Yes, this guy is certainly kid-friendly, huh?
He's basically an anthropomorphic duck version of the Joker, only less jovial and more murderous. Too bad for him that he's stuck in a cartoon where killing people is really darned hard.
(And good for everyone else, of course.)