Vellattam or Vellattu is an invocative ritual held prior to the actual Theyyam performance. The Gulikan Vellattu is held for Gulikan Theyyam, a character which represents the Hindu God of death, Yama. Through Vellattu ritual, the mortal human being is transformed into the divine self. Equivalent to the Thottam (the invocatory chant) ritual, Vellattams are more vibrant and vigorous.