In Vedic and Buddhist teachings, Kalki is an [[Avatar[[ of Vishnu. Kalki comes at the end of the Kali Yuga in order to "rejuvenate existence" by ushering in the Satya Yuga (age of truth) (a.k.a. Stage Seven. He is sometimes portrayed as leading an army of warrior priests in order to end persecution and usher in an age of peace and prosperity for all.
List of Avatars
See the poem Shambhala Warriors