This page explains in detail the interactions between the Mario series and the My Life as a Teenage Robot series.
My Life as a Teenage Robot: Sibiling Tsunami[]
The Mad Hammer Bros.
October 03, 2003
Mario
My Life as a Teenage Robot
The Mad Hammer Bros., recurring enemies of the series, debuting in the "Sibiling Tsunami" episode, are based on Mario and Luigi, being two mustached italian brothers with the taller one wering green overalls and cap, and the shorter one wearing red overalls and cap.
License[]
My Life as a Teenage Robot's company Nickelodeon had no rights to use Nintendo's characters Mario and Luigi, in fact they only used parodies of those characters.