“Okay, are you familiar with hospital biomedical waste disposal?” Quiverwing Duck asked Feliciana, when she inquired about Negaduck's toxicity. “Imagine a heap of that stuff, which is also on fire. Now imagine that in the shape of a duck wearing a red hat.”
Due to an extreme creativity deficiency, nemzit has been playing Negaduck in some form or other since 1996. The current Duckverse iteration came to myspace in 2009, initially intended as a preamble to icequeenkitty's genius, and focuses on the softer qualities of the villain: his loving care of the most treasured items in his armoury, his Doctor Dolittle affinity with deadly animals, and his immensely relatable hatred of all other living things.
Negaduck is an evil version of Darkwing Duck hailing from a 'negatron' dense parallel world known as the Negaverse. Despite the interference of Darkwing and the Friendly Four/Darkwing's Ducks, he has continued his self-proclaimed Lordship over that dimension, and whenever possible maintains a means to travel back to Darkwing's world aka the Normalverse to terrorise its inhabitants and generally wreck up the place.
Little else is confirmed regarding Negaduck's background. Beyond being hatched bad and having caused a nuisance of himself ever since he first congealed on this planet, it is possible nobody - Negaduck included - has solid recollection of his past. There is no civilian identity equivalent to Drake Mallard, and Negaduck has ensured through a variety of means that it is not physically possible to remove his black mask.
A sadistic psychopath down to his very core, Negaduck is cold, callous and cool as a criminal cucumber. Until something hits his berserk button, that is, and he doesn't fly off the handle so much as nuke the handle and launch anyone who witnessed said handle into orbit. Anger management is not his strong suit.
Despite being dubbed the 'opposite' of Darkwing, the masked mallards share many characteristics, notably their susceptibility to immense ego trips, dramatic flair and caffeine dependence. Negaduck is the far more cunning of the two, and with no need for affection is an oft demonstrated master of manipulation. He has a broad suite of talents from amputated limb drum solos to decorative cake baking.
Entirely selfish and self-serving, relationships are ranked solely in their usefulness to his nefarious purposes. His only attachments are to his wealth, his infamy and his ridiculous collection of thematic accessories, particularly Betsy the chainsaw and Bertha the shotgun.
He enjoys long murders on the beach and skulls, although nobody understands in what capacity.
Much like Darkwing, Negaduck's primary concern is Negaduck. His ego is often compared to a small planet, and its his continued overestimation of his abilities and underestimation of everyone's that is frequently his undoing.
His much beloved custom motorcycle, with extra large glove compartment, is fitted with a raft of additional features including heat seeking missiles, marshmellow roasters and yes an actual raft.
The shotgun. Repeat fire, somehow, designed for bunnies, doors, and whomever gets in his way. The original was also destroyed by Quiverwing in a portal made of acid. This is how grudges are made, people.
Set after the television series, Negaduck has continued his usual antics: a little mass mayhem here, a little baby kicking there, with various schemes and teams in between. On occasion he has come close to his ultimate goal, namely complete control of St Canard, but failing that, has gladly accepted causing as much destruction and uproar as possible. He enjoys being vile and has absolutely zero chance of reformation outside of a complete lobotomy. Which might be on the cards, if Jacob gets his way…
“A body most closely resembling mayonnaise in a ziplock bag” - Gladstone Gander, June 2018