|Average Behavior||Acting like Koins except it can move|
|First Appearance||Super Mario Bros.: The Popstar Crossover|
|Latest Appearance||Super Mario Bros.: The Popstar Crossover|
They behave like Koins, using their masks to block Mario's attacks, when Mario is near them, they begin using their masks, They behave like Goombas.
They are blue Goombas with a Shy Guy belt and a mask.
They only appear in a level called Mask Factory, they use their masks to defend themselves from attacks, being hit by fireball will burn the mask, they act like Goombas and Koins.
- If you look closely at the belt, it says "Belt made by Nintendo", a reference to Nintendo.