Designation

Designations are unique membership numbers possessed by all members of the Justice League and Young Justice. They are read out by the Computer when a member enters any restricted areas of the Hall of Justice or Mount Justice.

Justice League

 * 02 - Batman
 * 04 - Flash
 * 06 - Aquaman
 * 07 - Martian Manhunter
 * 08 - Green Arrow
 * 16 - Red Tornado

Young Justice

 * B01 - Robin
 * B03 - Kid Flash