Urban Stingby

Urban Stingbies are -like creatures found in the Metro Kingdom of Super Mario Odyssey. Despite having an implied counterpart, Urban Stingbies bear little resemblance to them outside of basic shape. They are normally found in alleyways in New Donk City, in their larva form. When they spot Mario, they morph into adulthood and charge him in a straight line; they are instantly defeated if they hit a wall. They also appear in the Darker Side, where they are always found in their adult form. Urban Stingbies are also among the few enemies that cannot be captured.

Trivia

 * While the larval form is based off of typical fly larvae (or "maggots"), mosquito larvae are actually not "maggots," but a creature that lives upside-down directly under the surface of stagnant water.