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The UrRu, also known as the Mystics, are an ancient race of kind four-armed wizards from the 1982 dark fantasy film The Dark Crystal. They are the benevolent counterparts of the malevolent Skeksis, one of the two races born from the divided UrSkeks.
Their faces were thrust forward on elongated necks with heavily white maned hair and were deeply wrinkled with runic patterns, which represented each urRu's lines of thought. They walked with a swaying motion, and had long tails which were insufficient to counterbalance the weight of their heads.
At the last Great Conjunction, the UrSkeks were divided into two races- the UrRu and the Skeksis. The four-armed Mystics took on the sorrows of the world. They inherited the mystical wisdom of the urSkeks, but were powerless to use it outside their own valley. Their hopes for redemption rested on Jen. There were originally eighteen Mystics, but by the time of the Great Conjunction when they rejoined the Skeksis, only eight remained.
The Dark Crystal: Age of Resistance
While the rest of the UrRu were absent during the first season of the prequel series, one of their members, UrVa the Archer, had a major role where he summons Aughra to him via arrow and helps her regain her connection of Thra. UrVa later has to commit suicide after being revived to end his counterpart SkekMal's life and pursuit for good.
Another Mystic, UrGoh the Wanderer, plays a rather pivotal role as both he and his Skeksis counterpart SkekGra the Heretic have a vision where a Gelfling will end the Skeksis's rule.
The Dark Crystal
UrSu the Master, on the verge of dying as with his Skeksis counterpart SkekSo, summons Jen to tell him of the Dark Crystal and restore it with the missing shard owned by Aughra. In doing so, he passes away dissolving into light, as the Emperor Skeksis crumbles to dust.
- UrSu, the Master (voiced by Brian Muehl)
- UrZah, the Ritual Guardian (voiced by Sean Barrett)
- UrVa, the Archer (voiced by Ólafur Darri Ólafsson)
- UrGoh, the Wanderer (voiced by Bill Hader)
- UrSol, the Chanter
- UrIm, the Healer
- UrAc, the Scribe
- UrTih, the Alchemist
- UrYod, the Numerologist
- UrAc, the Scribe
- UrNol, the Herbalist
- UrAmaj, the Cook
- UrUtt, the Weaver
- UrSen, the Monk
- Brian Froud based the Mystics on a previously designed troll from his 1977 book "The Land of Froud". In order to keep the two creatures separate for licensing purposes, he designed the Mystics to have four arms. This way Froud would keep copyright of his trolls while Jim Henson got the right to the Mystics.