Mask Koopa
Mask Koopas are Koopa Troopas that wear bizarre masks that resemble Mario. They appear only after the player beats the Special World in Super Mario World.
As seen in a cut scene in Super Mario Advance 2, Mask Koopas apparently got their masks when Luigi was throwing them down from a balloon. The Koopa Troopas were missing their shells, so they decided to take these masks to replace the shells. The masks will come off when pounded and can be thrown at enemies, just like a shell.
Some Mask Koopas have wings sprouting from their masks, making them the equivelent of Koopa Paratroopas after losing their shells. Like Paratroopas, one stomp removes the wings, turning the creatures into normal Mask Koopas.
Mask Koopas act no differently from the basic Koopa Troopas. They have yet to appear in any other game besides Super Mario World, excluding remakes.
