Telethia, the Endbringer is a Mission Exclusive Enemy in Xenoblade Chronicles X. It is found at level 99 in Noctilum, at the Divine Roost, only during the mission The Nopon Heir, during which it replaces the Tyrant with the same name. This Telethia cannot be defeated, as the battle will end after it has lost 5% of its HP. Unlike the Tyrant, the mission exclusive variant is sight- and sound-aggressive. It drops the Guardian Etherscale needed to complete this mission.