Hardest Boss Battles #7 HD - Steelbeak
I love Darkwing Duck, it used to be my favorite show to watch when I got home from school. If any show deserves a reboot it's Darkwing Duck. We are getting the Duck Tales reboot soon so it might not be entirely out of the realm of possibilities, I'm just afraid it'll turn into something too silly.
As for this game, I actually beat the Gameboy version as a kid so the NES one came way later in my life. This boss is only really hard because of those projectile shooting eggcopters, once you get passed those it becomes a manageable fight.
One flaw of this game is the exclusion of Nega Duck.