Kalki, also called Kalkin, is the prophesied tenth and final incarnation of the god Vishnu. He is described to appear in order to end the Kali Yuga, one of the four periods in the endless cycle of existence (Krita) in Vaishnava cosmology. The end of the Kali Yuga states this will usher in the new epoch of Satya Yuga in the cycle of existence, until the Mahapralaya.
Raja Ravi Varma's portrayal of Kalki
Statue of Kalki's incarnation on a wall of Rani Ki Vav (The Queen's Stepwell) at Patan, Gujarat, India
The central figure is a Yidam, a meditation deity. The 25 seated figures represent the 25 Kings Of Shambhala. The middle figure in the top row represents Tsongkhapa, who is in the top two middle rows. This comes from the scriptures that is part of the Indo-Tibetan Vajrayana Buddhist Tradition.
Kalki and Devadatta
The Dashavatara are the ten primary avatars of Vishnu, a principal Hindu god. Vishnu is said to descend in the form of an avatar to restore cosmic order. The word Dashavatara derives from daśa, meaning "ten", and avatāra, roughly equivalent to "incarnation".
Hindu god Vishnu (centre) surrounded by his ten major avatars (Krishna-Buddha version). Anticlockwise from top left: Matsya; Kurma; Varaha; Narasimha; Vamana; Parashurama; Rama; Krishna; Buddha and Kalki
Vishnu surrounded by his avatars; artwork by Indra Sharma
Hindu god Vishnu's ten major avatars (Balarama-Krishna version) Dasavatara shrine, 18th century ivory (National Museum, New Delhi). From top descending: Matsya; Kurma; Varaha; Narasimha; Vamana; Parashurama; Rama; Balarama ; Krishna and Kalki.
1st to 5th of the Dashavataras on Udupi Sri Krishna Matha gopuram, Karnataka.