User blog comment:Atregle/Designation numbers for The Team/@comment-75.27.95.206-20120619233508

Tim Drake's Designation is B20. It says that in Happy New Year right after they return form locking up Clayface. My personal theory is that Superboy and Miss Martian at some point made the case that the Bioship and wolf were members of the team and deserved thair own designations. That still leaves two designation unacounted for, but I think that makes more sense than two mystery members joining and then leaving in less than a year.