Mouser - Super Mario Wiki, the Mario encyclopedia

Mouser is a large, anthropomorphic mouse who wears sunglasses, gloves and boots. He is a resident of Subcon, the land of dreams. Not much is revealed about Mouser, though it is mentioned that he is prideful and utilizes his bombs to destroy good dreams.

Super Mario Bros Ep 37-Mousersaurus Rex by GiuseppeDiRosso on DeviantArt

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