The names of the time policeman that arrest Blendin are Lolph & Dundgren, if you swap the first letter from both names you get the name of actor Dolph Lundgren.
First appearance of Waddles.
"that'll do pig, that'll do..." is a phrase from the movie "Babe"
The time traveler is voiced by Justin Roiland, who also voices both of the title characters of 'Rick and Morty,' a show with a number of connections to 'Gravity Falls.'
Mabel wins Waddles by guessing his weight. This is how Farmer Hoggett wins Babe in the book/film.