In the whole lot of theyyams and thiras mother godess theyyams are the most prominent and of utmost importance. Bhagavathy, Kaali and Chamundi all come under Mother(Godess) theyyam. The most important theyyam among the whole lot of mother theyyam is "Thayi para Devatha". This theyyam is also known by the name "Kola Swaroopa Thingal Thaai". Kolathiri dynasty offered a place in thiruvarkaad, also known as maadayi kaav and thus thayi para devatha was known by the name Maadai Kaavil Achi. This theyyam is considered as eradicator of all diseases and difficulties. Basically the history behind the origin is believed to be as follows. Lord Shiva provided Kaali with 18 divine weapons to kill Daarika. Vethaal was the vehicle for Kaali. Kaali spread her army around the fort of Daarikan. 7 days and 7 nights, they fought each other and at last Kaali killed Darikan by keeping him over the tongue of Vethala during the twilight time.