Mertropolis

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Mertropolis
Mertropolis.jpg
First appearance The Adventures of Super Mario Bros. 3 ("The Ugly Mermaid") (1990)
Greater location Water Land
Ruler King Mackerel
Inhabitants Holly Mackerel, merfolk

Mertropolis is an underwater city, protected by a dome and filled with atmospheric air, featured in the The Adventures of Super Mario Bros. 3 episode "The Ugly Mermaid." Though never stated outright, it is implied to be somewhere within Water Land. In the episode, King Koopa plans to take over the city using his Doom Sub, renaming it "Kooptropolis" before his plans are foiled by the Mario Bros.

Mertropolis is inhabited by mermaids with fish heads and human legs, and is ruled by King Mackerel. His daughter, Holly Mackerel, is also featured prominently during its appearance. Since its residents are unable to breathe air, they wear water-filled fishbowls around their heads while in the city; yet, they panic when King Koopa attempts to flood it.

The town's name comes from a portmanteau of the words "merfolk" and "metropolis," a term for a big city.

Names in other languages[edit]

Language Name Meaning Notes
French Metropolis -
Italian Metropolis -
Portuguese Martrópolis A portmanteau of the words mar (meaning "sea") and "metropolis".
Spanish Mertrópolis Mertropolis