"This flying menace thrives on destruction, so a burning house is an appropriate venue for your first encounter. You can fight him in a conventional style, but a single hit from Flint's Power Smash will work just as well. Drops Peculiar Cheese (20%)"
— The Mother 3 Guidebook
"The buzzing wings on its back were probably transplanted from a giant insect."
— Battle Memory

Flying Mice are the first Chimeras that Lucas and co. face in Mother 3. They are blue mice with red eyes and a huge pair of wings. It has lost its arms in exchange for wings. One is encountered as a mini-boss when trying to save Fuel from Lighter's burning shack in Chapter 1.

They are later encountered in the Sunshine Forest area until Chapter 4, when they are replaced by Really Flying Mice.

Its battle sound is Battle Sound 52 which falls under Code Numbers 915 for regular attack, 916 for Smaaaash! and 917 for Miss.