Fourside

Fourside is a stage that appears in the Super Smash Bros. series. It first appears in Super Smash Bros. Melee and returns in Super Smash Bros. Ultimate. It is from the Earthbound universe.

Origin
Fourside is one of the major locations that Ness and the other heroes visit during their adventure. After escaping the zombie infested Threed and trekking through the desert, Ness, Paula, and Jeff found themselves in Fourside. At some point, Paula gets kidnapped forcing Ness and Jeff to go through great lengths to rescue her. This also involves going through a distorted version of Fourside known as Moonside. However, it was later revealed that Moonside isn't real and that it was all an illusion caused by the Mani Mani Statue. Eventually, Paula is rescued and Porky Minch steals the helicopter causing the heroes to find another way to get to Summers.