The Dark Crystal included at least one nod to the postmodern movement.
 As revealed in The World of the Dark Crystal, their people considering both their moral imperfections and attempt of manipulating their homeworld's Crystal intolerable, the eighteen urSkeks were banished to Thra through the Crystal of Truth until they have learned to master their dark aspects
 By the time of the second Great Conjunction, the urSkeks created a mirror network around the Great Crystal to trap the light of the next Great Conjunction for their use in returning to their world while purging their imperfections

