 When angered, they take on a beast-like form referred to as "Nirik" ("kirin" spelled backwards).They were formally introduced in the season eight episode "Sounds of Silence", where the Kirin character Autumn Blaze revealed that after their anger and bickering destroyed their own village, the elder Rain Shine forced them to bathe in an enchanted river that suppressed their ability to express emotions or speak (however, "foal's-breath" flowers are able to reverse the effects).The Pony Friends is a sub-line of My Little Pony, first released in 1986.