This document provides information about the ritual art form of Theyyam performed in northern Kerala. It discusses the origins of Theyyam as a Hindu ritual worship that emerged from Kaliyattam. Key details include the various gods and goddesses associated with Theyyam like Muchilot Bhagavathi and Muthappan. The document also describes the training, costumes, musical instruments, and performance of Theyyam, noting some take place year-round while others are seasonal. Specific types of Theyyam are highlighted like Vishnumoorthy, Gulikan, and Puthiya Bhagavathy, each with their own myths and legends.