The presiding deity in the 'Garbhagraha' (central shrine) is Mahavishnu. The people at large, however, invoke the Lord as "MURARI".The Tharananalloor Namboothiris were the original ‘Thanthries’ here and now this duty is performed by the Kollur Athiyara Madom Namboothiris who belong to the 'Ettara Yogam' (Eight Namboothiri families and the Karnatha Kurup who have the responsibility for the religious rituals of the famous Padmanabha Swami Temple). The strength of the deity here is believed to be stronger than in other temples as there are no Upadevatas (subsidiary deities) enshrined here. There is only a Yakshi Amma on the northern side of the temple.