There are two types of “spirits” featured in the Phi Ta Khon procession namely the “Phi Ta Khon Yai” the supreme Phi Ta Khon, and the “Phi Ta Khon Lek”, the ones that are commonly found. The making of the Phi Ta Khon Yai involves the performance of a sacred ritual to seek the blessings of the supreme powers before work on the Phi Ta Khon Yai masks can be initiated. It is also a task reserved exclusively for the descendants of families in which the tradition of making Phi Ta Khon masks has been practised for several generations. The Phi Ta Khon Yai is made of bamboo and is dressed in either male or female attire.