Nicknames at various times have included Roach (for when he was always bumming joints back in the day), Sporticus (for his obsession with sports), and the Lone Arranger (for his individualistic approach towards arrangement of Eagles music, preferring to work alone in the studio). Also, he calls himself Elvis sometimes, ie "I told myself, 'Elvis, you can't party like you used to.'" (From http://www.glennfreyonline.com/funfacts.htm)