This character has been mentioned only and never actually shown in a comic book. Despite their lack of physical appearances, information about them might still be relevant or interesting or at least worthy of documentation. Anything known about them is to be considered second-hand information.
Lew Moxon is a criminal during Batman's beginning years. Moxon is never directly encountered by Batman, but the criminal's name is written on a piece of paper in GCPD Headquarters.