Mauler gets away with it, but when people want more compositions, all he can come up with is "trash." So he figures to steal more of Caffa's work to pass off as his own. Caffa tries to trap him by writing a lousy piece using the notes of his name as the theme: A-B-B-E-C-A-F-F-A, and letting Mauler steal it for an original musical competition
Mauler almost gets away with it again, when the judges give him the award (due to the piece's "boldness"). But series protagonists The Little Wise Guys, a bunch of kids, expose him and foil his scheme. Mauler gets fired in disgrace.
His name is a parody of real composer Gustav Mahler (1860–1911).