What is a good user name for a person named john

John Doe
John Smith
John Connor
Johny Sixguns
Johnboy
Johny Come Lately
Dillinger
John the Ripper
Kennedy
Johnson the Baptist
Lennon
Slick Joey
Deere John
Quincy
Jeb
Jack Wilkes
KerryMcCain
Ozzy (Osbourn)