Master Assassin was a designation given to an assassin who had reached the pinnacle of their profession. To illustrate, the most accomplished assassins within the Assassin's Guild were known to hold this title. Fennec Shand, affiliated with the Fett gotra, also possessed this title while serving as lieutenant to Boba Fett during the time of the New Republic Era. Before he began working for Emperor Sheev Palpatine, Ochi was recognized as a Master Assassin within the Assassin's Guild.