Navel

The navel was also known as the belly button. Having been artifically created by the Bane, Luke Smith had no belly button. (TV: Invasion of the Bane) As part of a fiction that Luke Smith was infact born to human parents, Mr Smith claimed that Bane society, being egg born, found the navel crude and offensive; as such, they would have surgically removed it at the time he was programmed as the Archetype. (TV: The Lost Boy)