What is "damarwulan"

Damarwulan is a Javanese legendary hero who appears in a cycle of stories used in the performance of wayang klitik, as well as Langendriya (female dance-opera) and ketoprak (popular theater). These stories tell of the struggles between the Majapahit and Blambangan kingdoms, in which Damarwulan gains honor. The stories are especially popular in East Java.