Karuvurar is a saint or Siddhar in Tamil Nadu, India. There are 18 Siddhars popularly known in Tamil literature. He is the one among the 18 Siddhars. The word Siddhar is derived from the Tamil word Siddh, meaning wise. Believers describe Siddhars as having the "ability to perceive the higher cosmic movements in universe." They are described as experts in Yoga, alchemy, literature, and philosophy, and as having the ability to move their souls to and from the bodies of others.