Since at any given moment there might be thirty or forty unidentified serial bank robbers pulling jobs in L.A. — "unsubs" in FBI parlance, short for "unknown subjects" — I always gave them nicknames to keep them straight in my head, names based on some memorable aspect of their appearance or M.O. That guy who always disguised himself by wrapping surgical gauze around his head? I called him the “Mummy Bandit.” The one who for some reason always wore one glove during his robberies? He was the “Michael Jackson Bandit.” Two professional armed bank robbers who wore wigs and glasses and fake mustaches were the “Marx Brothers.”