I once worked on a project, which used the Dow Jones list of people of interest, a list of politicians and terrorists, mostly. One day the software began to fail catastrophically, when parsing the latest version of that list. That day, a Mr. Null was added to that list ;-)
As in no name at all? Now that’s an entirely new level. Pretty forward thinking parents considering today’s surveillance... maybe they where phreakers tried to name him ' OR '1'='1 but the Government didn’t accept special characters so they resorted to naming him null.