Origin story
Tradition holds that Vishnumaya was born to Shiva and Parvati and took the form of a child to defeat the asura Bhrugasura through illusion, or maya. In northern Malabar he is linked with the Kuttichathan Theyyam; in Thrissur and Malappuram he is worshipped in kavus as Kuttichathan, the playful yet powerful son.
He is a guardian deity of the village, depicted as a sturdy boy riding a buffalo and holding a short stick. The child's form and the offering of a cockerel point to innocence and swift action, and the god is invoked against misfortune, sorcery and obstacles.
Source: Wikipedia: Kuttichathan — https://en.wikipedia.org/wiki/Kuttichathan
