Mhalsa Devi is a manifestation of Mother Goddess Shakti. She appeared as the consort of Khandoba, a manifestation of Lord Shiva. This form of Goddess Shakti is widely worshipped in Maharashtra, Goa, Karnataka and Telengana.
Two demons named Manni and Malla took the form of wolves and harassed shepherds and farmers. The shepherds and farmers prayed to Lord Shiva, who took the form of Khandoba. He then appeared along with Mhalsa Devi and vanquished the demons.
Temples dedicated to Mhalsa Devi is along with that of Khandoba. There are also shrines in some regions that is exclusively dedicated to Mhalsa Devi.