Tyrann, the Supreme Serpent Master in 0 ABY The leader of the Serpent Masters residing on Ophideraan was known as the Supreme Serpent Master, or sometimes just the Supreme Master. Tyrann occupied this role during the year 0 ABY.
From the higher tiers of the Great Well, the Supreme Master governed the Serpent Masters along with their enslaved population. A medallion, worn around his neck, housed a transmitter that allowed him to command the Ophideraan flying serpents. Luke Skywalker eventually destroyed this device, leading to the slaves' rebellion and the Serpent Masters' downfall.