Find Mii

Find Mii (known as StreetPass Quest in Europe and Australia) is a stage in Super Smash Bros. for Nintendo 3DS and Super Smash Bros. Ultimate based on the game of the same name from the built-in Nintendo 3DS application StreetPass Mii Plaza, specifically the top of the ruins of the Castle of Darkness, the game's final level.

The stage has two main platforms; a larger, flat ground on the left, and a smaller, raised piece of ground on the right. There is a large gap between the two, allowing for easy meteor smashes. Additionally, a caged Mii is positioned above the left platform, which varies at times; it is currently unknown how often the Mii changes, but it is assumed that it depends on which Miis are on the player's 3DS. Contradictory to this, however, is the fact that some screenshots show the cage to be empty. The caged Mii has a hitbox and the cage can be destroyed, sending the Mii flying into a background.

The Dark Emperor (known as the Dark Lord in Europe and Australia) from Find Mii II can be seen flying around the stage. Occasionally, he gives a single fighter a level boost or hindrance, or he temporarily sinks either of the stage's two platforms. He also occasionally goes into the foreground to attack fighters by coming into contact with them. If a fighter defeats it, they get a temporary stat boost.

The Final Destination variant takes place on a singular platform. The Dark Emperor and the caged Mii are removed.