Twilight Town

Twilight Town is a somewhat creepy town in Paper Mario: The Thousand-Year Door. While Mario and his teammates were searching for the fourth Crystal Star, the residents here were turned into pigs by Doopliss, who eventually stole Mario's identity and kidnapped his team (the team was unaware that the Mario they were with was Doopliss) and caused trouble here, but it was Shadow Siren Vivian who joined the team to help Mario break the curse and get his appearance back. It is somehow speculated that this very town is the Shadow Sirens' birthplace.