Kalki

Kalki (), also called Kalkin, is the prophesied tenth and final incarnation of the Hindu god Vishnu. According to Vaishnava cosmology, Kalki is destined to appear at the end of the Kali Yuga, the last of the four ages in the cycle of existence (''Krita''). His arrival will mark the end of the Kali Yuga and herald the beginning of the Satya Yuga, the most virtuous age, before the ultimate dissolution of the universe (Mahapralaya).

In the Puranas, Kalki is depicted as the avatar who will rejuvenate existence by ending the darkest period of adharma (unrighteousness) and restoring dharma (righteousness). He is described as riding a white horse named Devadatta and wielding a fiery sword. The portrayal of Kalki varies across different Puranas, and his narrative is also found in other traditions, including the Kalachakra-Tantra of Tibetan Buddhism and Sikh texts. Provided by Wikipedia