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"Massive Unidentified Terrestrial Organism" refers to a species of giant monsters that appeared as the main antagonists in Godzilla (2014).
M.U.T.O.
Monsters
for Monsters in Martin Mystery: War of the Monsters
Suggested by toonking1985
The Center finds itself embroiled in a global conflict of monsters, and Monarch enlists them to save the world from the clutches of King Ghidorah and Destroyah. Little does anyone know that this is just the tip of the iceberg...
