Retsu is a brown-grey insectoid creature with six legs, a body consisting of four small segments and one large segment, a head, and two tendrils on the end of his body. His head is at the front of his body and bears his facial features.
As a playable characterEditRetsu's goal as a playable character is to be eaten by Moku-gyou, the king of Ming-ken. In another life, Retsu can be picked up by the player and fed to Moku-gyou in order to enter his mouth.
Retsu's name is the seventh syllable of the Kuji (九字), a series of nine syllables. Each syllable has its own symbol, mudra (hand sign), mantra (utterance/prayer) and mandala (visualization). The syllables in order are Rin (臨), Pyō (兵), Tō (闘), Sha (者), Kai (皆), Jin (陣), Retsu (列), Zai (在) and Zen (前). The mudras, mantras, and mandalas put into practice for ritual or meditation purposes is referred to as the Kuji-in (九字印), or "Nine Hand Seals". The Kuji-in has roots in Hinduism and is used in a wide variety of practices including Shinto, Buddhism, Taoism, Ninjutsu and schools of Japanese Esoteric Buddhism such as Mikkyo, Tendai and Shingon.
The kanji "retsu" (列) can mean "In a row", "split/line" or "dimension".