Kalki Avatar is described as the last of the Maha Avatars of Lord Vishnu, who will appear to end the Kali Yuga or the Dark Age. The Kali Yuga is known as the Iron Age and thus Kalki will be the Avatar or the Incarnation in the age of machines. Kalki Avatar is described in the Vishudharmottara Purana as a robust young man, riding on his white horse, Devadutta and with a shiny sword raised in his hand. While some sketch him as being four-armed, most of the records focus on him as two-armed. The scriptures portray emergence of Kalki as a blazing Light when he descends from heaven. Kalki Avatar is being listed as the tenth avatar in Garuda Purana while in Bhagavata Purana lists Kalki Avatar as 22nd avatar in the list of twenty-five avatars.
The portraiture of Kalki is imbued with symbolic overtones. Kalki would ride on the horse of purity and might, and ward off and destroy the prevalent evil with his lashing sword of Dharma or righteousness. Therefore his name is endowed with deeper meaning. The name Kalki, literally communicates the meaning, `Annhilator of Ignorance`. The epic, Mahabharata specifically depicts the descent of Vishnu as the Kalki Avatar. The pious sage, Markendaya, illuminated Yudhisthir, the first of the Pandavas, on this precious knowledge. Markendaya informed that in a certain village called Shambala, Kalki would evolve. He will be born as a son to a virtuous Brahmin couple called Vishnuyasha and Sumati, on a bright fortnight of the lunar month of Baisakh, on the 12th lunar tithi or occasion of (Dvadashi). The Brahman boy will be endowed with the gifts of intelligence, strength and velour. He will assemble other Brahmins into a formidable army to eradicate evil totally.
He will be identified by two of the Nine Immortals or Chiranjeevin currently residing on the planet. They are characters from the Mahabharata, Parashurama and Ashwatthama. Parashurama is the sixth Avatar of Vishnu, who replanted the flag of Dharma, by wiping off the oppressive Kshatriya clan or warrior class from the face of the earth. Parashurama will appear to be the spiritual guide of Kalki, by educating him to undergo penance. Parashurama himself meditated with utmost devotion for 1000 years. Lord Shiva then blessed him with a divine weapon for cleansing vice, as a reward of such penance. He would help Kalki to march forward, following the same path, achieve the Ratna Maru sword and the heavenly parrot, Shuka from Shiva and accomplish his task.
He will marry Padma, the Avatar of Vishnu`s consort, Devi Lakshmi and have two children, sons Jaya and Vijaya. Kalki will also perform the grand Ashwamedha Sacriifice to abolish all vitiated kings and false prophets, before embarking on the mighty assignment of the final obliteration of evil and misery in the Kali Yuga. After the completion of his work, the human shape of Kalki, will expose itself in the four-armed cast of Maha Vishnu and return to his celestial abode of Vaikunth. Kalki Avatar will be that redemptive force that will purge formation of the disgraceful burden of sins.