As you may recall from KH2 in the Secret Ansem report 9 (or 10 12 13) Ansem the wise mentioned five disciples (other than Xehanort) entering the darkness, but only four became nobodies. I know it was them because their names have similar spellings to four nobodies (Even-Vexen etc.). But the last one mentioned "Bleig" seems to be an enigma because no nobody shares similar letters to his name. The closest is Xigbar, and even that is far off. If anybody has an idea please share with us.