Editing Find Mii

|image = {{tabber|title1=Ultimate|content1=[[File:SSBU-Find Mii.png|300px|Find Mii]]|title2=3DS|content2=[[File:SSB4 Find Mii.JPG|300px]]}}

|caption = [[File:FindMiiSymbol.svg|50px|class=invert-dark]]<br>Find Mii as it appears in ''Smash''.

Occasionally, the [[Dark Emperor]] appears in the background, then later comes to the stage, or retreats back to the background. While he is off the stage, the Dark Emperor may provide an upgrade or downgrade to certain characters; when this happens, a notification appears in the bottom screen detailing who was affected and how. In ''Ultimate'', due to having one screen, the status effect is displayed above the character, with an icon on what stat has upgraded/downgraded. He can also fly into the foreground, damaging those he touches. After taking a certain amount of damage, he becomes defeated and flies back into the background, awarding the player who defeated him with a temporary stat boost. At times he can also make one of the two platforms temporarily sink into the abyss.

[[File:FindMiiOrigin.png|thumb|left|The Dark Emperor and the Castle of Darkness - Roof and Sky Tower as seen in ''Find Mii II'']]

''Find Mii'' (known in PAL regions as ''StreetPass Quest'') is a game included in the pre-downloaded Nintendo 3DS application {{uv|StreetPass Mii Plaza}}. In it, the player must send Miis from other systems their 3DS has Streetpassed (or Wandering Heroes hired using Play Coins) to rescue the player's Mii, the ruler of a kingdom who has been kidnapped by otherworldly monsters. Beating it twice unlocks ''Find Mii II'' (accordingly known in PAL regions as ''StreetPass Quest II''), the longer sequel to the game. At the beginning of ''Find Mii II'', the ruler Mii is once again captured, this time along with their son and daughter. The ruler is imprisoned in a cage located at the Castle of Darkness, the final area of the game and the basis of the stage in ''Smash''.  

In the main quest of ''Find Mii II'', the final boss is the Dark Lord, who is fought at Castle of Darkness - Sky Tower; in the Secret Quest of ''Find Mii II'' (unlocked by beating the main quest once), the final boss is the Dark Lord's upgraded form: the Dark Emperor, who is fought at Castle of Darkness - Roof. The platform layout of the stage is identical to how the Castle of Darkness appears on the ''Find Mii II'' world map.

In ''Find Mii II'', the Dark Lord/Emperor's magic is not necessarily based on the twelve Mii colors. This concept is taken from the player's team of Miis - each Mii color has access to a different magic spell, varying from direct attacks to applying status effects, some of which are mandatory for progression in the game. The symbols used in ''Ultimate'' to display stat changes are taken from the [[Smash Run]] and [[Smash Tour]] modes from ''[[Super Smash Bros. for Nintendo 3DS]]'' and ''[[Super Smash Bros. for Wii U|for Wii U]]'', respectively.

SSBUSoraCFalconZSSamus.jpg|{{SSBU|Sora}}, {{SSBU|Captain Falcon}}, and {{SSBU|Zero Suit Samus}} facing off against the [[Dark Emperor]] on the stage.

*In ''Smash 4'', this is one of the several non-[[Stage Builder]] stages that allows [[Final Smash]]es such as [[Great Aether]] and [[Omnislash]] to turn into [[suicidal KO]]s, by sending the user and victim straight to the bottom blast line. This can only occur once the Dark Emperor causes the main platform to sink, but the Final Smash must be activated before the platform is fully offscreen, since doing it too late will result in the fighters being transported above the remaining small platform.

*In ''Smash 4'', sending the Mii cage flying before or during a time-stopping event (such as a [[Final Smash]]) can rarely make the respawned cage glitch out and constantly attempt to reposition upwards, causing the cage to wildly swing in circles.

*In ''Ultimate'', [[Nikki]] (due to the dark background obscuring her drawings) and [[Nightmare]] cannot be summoned from an [[Assist Trophy]] unless the stage is selected in its Battlefield or Omega form. Additionally, [[Moltres]] and [[Kyogre]] can only be summoned from [[Poké Ball]]s on the Battlefield and Omega forms of this stage.