Marshall joined the Red Hot Chili Peppers in 1992 to replace lead guitarist John Frusciante, who quit in the middle of the band's worldwide Blood Sugar Sex Magik Tour. He toured extensively with the band during his tenure as their guitarist and played the Lollapalooza festival of that year. Anthony Kiedis later praised Marshall for being "a quick study" and never letting them down onstage. Despite not playing on the recorded songs, Marshall appeared in both of the "Breaking the Girl" and "If You Have to Ask" music videos.