US
A.k.a. Robert L. Williams II
American painter and cartoonist. Worked as art director with Ed "Big Daddy" Roth; member of the Zap Comix underground comix collective in the 1960s with Robert Crumb, Victor Moscoso and Rick Griffin (2); founder of Juxtapoz magazine in 1994. Painted the cover for Appetite For Destruction, among others.