Sherman, better known by his stage name "Swampy," (voiced by Steve Zahn) is a recurring character of Phineas and Ferb. He is a librarian and former drummer of the 80s hair band Love Handel. Sherman was a part of the band for as long as is known, though infighting and other complications lead to the band sizzling out and going their separate ways. The band would reunite a decade later to celebrate a wedding anniversary between Linda Flynn and Lawrence Fletcher.