You know, it's highly likely all this stuff happened in the Dino timeline too, so Mitzi may not really need Doc to cure her curse, since she lived in that timeline long enough to take out Horrorsaurus 1. All that is contingent on Dino Universe Mayor Chuck also deciding to lay low after the shuttle explosion, but I think the odds of that are decent. I mean, NASA thought it was their Chuck in space.
So, my prediction: Archibald is among the cleverest of vampire hunters and has been in a century-long mission to take out Dracula. He wants to be mayor because then he and his Mummy companion will have all the spacesuits they could possibly need from the Zombie Defense System. Dracula hired Mitzi to take out Archibald because he doesn't want his moonbase exposed to the U.S. government, and more subtle methods were required. And it's Dracula who will cure Mitzi in exchange for a price from Dan -- maybe his mustache or something I dunno. As for Dr. McNinja, he's laying low to take out the aforementioned rollerblade-hunter ring, which was a more complicated task than he originally expected because it's run by the Robster and his extended family, the race of tricky lobster people.
I'm pretty sure at least one of those things I just made up has be right.
