Theyyam is a generic name for a deity that is worshipped in the Indian state of Kerala. These rituals are often held in front of temples in front of a crowd. An individual will play the part of the deity with decorated masks and makeup. Then the individual will dance to the music or perform dances that narrate the myth or story about the particular deity. Individuals chosen to personify a deity must endure fatigue and hunger. They are not allowed to eat before the ritual and must fast and purify their bodies. These rituals are thousands of years old and involve the participation of both upper and lower castes. They can last twelve hours to a whole day.

Muthappan Theyyam is one of the principal deities worshipped in Kerala. Muthappan Theyyam is considered both as Shiva and Vishnu in one being. There is an old story about an old man who suddenly fell ill. When the wife of the old man prayed for her husband to get well, her prayer was answered. To give thanks she gave fish as an offering. To this day fish is offered to the deity as an offering.

One of the theyyam or deities that are worshipped is Lord Shiva. The Lord Shiva is also called Guligan Theyyam. The Guligan Theyyam is noted for its costume, with has a long palm leaf headdress that reaches to the sky and a large mask that covers the face. Visitors come to pay their respects to the theyyam.

Another deity that is worshipped is Moovalamkuzhi Chamundi. This deity is a goddess and is very important to the weaving castes of Kerala. Individuals dressed as Moovalamkuzhi Chamundi wear a large round headboard like that of a peacock. A set of false breast plates are also worn by the impersonator.