Fuller was the co-founder of Pure Prairie League, along with John David Call and George Powell.
In 1987 Fuller was hired by Little Feat to front the band, who had noticed a resemblance in his voice to that of their late founder and frontman, Lowell George.
He is one of several guest artists on Little Feat's 2008 album Join the Band duetting with percussionist Sam Clayton on the Lowell George classic "Spanish Moon."
Fuller opened for and sat in with Little Feat on New Year's Eve 2011 at the Fillmore in Silver Spring, Maryland, when the band performed their live album Waiting for Columbus in its entirety.
with J. D. Blackfoot with Pure Prairie League with American Flyer with Fuller and Kaz with Little Feat with Doug Prescott