Targnil is a celestial Turgkin which is a result from Targilin performing self-surgery. She lived with an unstable psyche until she isolated the corrupt region of her brain and physically threw it away. This resulted in the manifestation of Targnil, a dysfunctional fragment of intellect, acting on its own.
Targnil himself is pure anger, an ominous entity who perpetually lives in an existential crisis. He does whatever he can to remove himself from existence, but cannot due to the persistence of his Archo-Spirit. Despite his efforts, he keeps regenerating.
Targnil can only lay dormant under the surface of Dutvutan, away from sound and light, hoping to deteriorate over time.