The conflict of trust between Darkwing and Gosalyn contrasts the one in "When Aliens Collide". Here, Darkwing is wrong to trust the authority figure and Gosalyn right for trusting the weaker creature. There, it is the other way around.
Clovis goes from janitor outfit to superhero outfit while eavesdropping on Swenlin Swine in the flashback.
Darkwing seems to forget he's been a mutant thrice, once in "Aduckyphobia", once in "Going Nowhere Fast", and once in "Disguise the Limit" (and a fourth time depending on when "Liquid Diet" takes place). It were all good powers, but ones that either endangered his secret identity or were unstable, which is why he gave up on them.
It is not revealed who Cement Head's partner-in-crime is.