Loserville is an imaginary place in Greg's mind. It appears in the second live-action 2011 movie.
After Frank walks into the garage when Löded Diper is rehearsing for Plainview's Most Talented disappointed, Greg says that he thinks he is worried about Rodrick turning out like Bill Walter, Greg turning out Rodrick andBill and the same thing happening to Manny in the style of his illustrations. The four copies of Bill then walk into Loserville.