In Jainism a siddha is a soul that has completed the path and left the body forever. Siddhas dwell at Siddhaśilā, the crescent at the top of the cosmos, each retaining its individuality but untouched by the world. They are honoured in the Namokāra Mantra, the central Jain prayer, after the arhats.
Siddha (Jain)
A perfected, liberated soul dwelling at the summit of the universe, free of body and karma.
Also: Siddha