|“||Zzzzzt! Thizzz place is completely wrecked! What in the world happened here?||”|
–Pokédex Rotom, Pokémon Ultra Sun and Ultra Moon
The Ultra Ruin is a destroyed futuristic Hau'oli City with most of its inhabitants having escaped to another planet.
Some debris is reminiscent of the Hau'oli City from the player's dimension, such as one of the gate from the city's entrances, the red fences painted by Ilima, the chipled wall where the Poké Finder was first used, and a rusted sign reading: "...oil... ...ity Ha... "Servi... ... ...ity's... ...need...", which the resembles the City Hall sign.
A Guzzlord is found once each visit in Ultra Ruin. It has an aura that boosts its Attack by two stages.
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