Kroni (Tamil: குறோணி) is a figure in Ayyavazhi mythology. He is the primordial manifestation of evil, and manifests in various forms of evil, such as Ravana and Duryodhana, in different ages or yugas. To counteract and destroy the evil of Kroni's manifestations, Mayon (a Tamil name for Vishnu) incarnates as Avatars such as Rama and Krishna. He seems to be more evil than the demon Kali of the Mahabharata and Kalki Purana sharing similarities with Lucifer.