John Frusciante probably one of the most-well known guitarist of our time and one of the most imitated. John was not a founding member of the RHCP, but he certainly defined the band and its sound.
John left the band during the touring for the album, Blood Sugar Sex Magik, and was replaced eventually by Dave Navarro (Jane's Addiction), whom the album, One Hot Minute, was recorded with. After John's departure from the group he went into a downward spiral of drugs and overindulgence. Locking himself up in his residence for days on long drug-trips while painting.
John rejoined the group and the RHCP released, Californication, which cemented them as rock icons of our era.
Sample of John's Sound:
Here is the list of gear that John Frusciante generally uses live:
Fender Dual Showman Silverface Head
Marshall 2550 Silver Jubilee Head
Marshall Major Head
Marshall Cabinet / 4 x 12
Fender Stratocaster American Electric Guitar
Fender Telecaster American Electric Guitar
Gretch White Falcon Electric Guitar
Boss CE-1 Chorus Ensemble
Boss DS-2 Turbo Distortion
Electro-Harmonix Big Muff Pi Distortion
Ibanez WH-10 Wah
MXR Phase 90 Phaser