Also known as Ācalanātha, Āryācalanātha, Ācala-vidyā-rāja and Caṇḍamahāroṣaṇa. In Vajrayana Buddhism, Ācala (alternatively, Achala or Acala) is the best known of the Five Wisdom Kings of the Womb Realm. Acala means "The Immovable One" in Sanskrit.

Son of Mahinetra, ruled for 32 years