Muthappan is considered as the manifestation of Lord Shiva himself in Nayattu (hunter) format. The Vellattam which comes initially is Siva himself as the said minimal version. But the Vellattom which comes along with the grand Thiruvappana of Muthappan later on, is the minimal version of Vishnu who according to mythology, comes to Siva's assistance when he started travelling with the poykannu (blindfold) and started suffering serious difficulties to travel and hunt for food.