He was one of the eleven rudras born from Brahma’s son Sthanu. According to Mahabharata Adiparva Chapter 66 verse 2, the others were Mrigavyaadha, Nirriti, Ahirbudhnya, Pinaki, Sarpa, Dahana, Ishvara, Kapali, Bharga and Sthanu. However, the Vishnupurana Ansh 1 Chapter 5 names Hara, Bahurupa, Trayambaka, Aparajita, Vrishakapi, Shambhu, Kapardi, Raivata, Mrigavyaadha, Sharva and Kapali as the eleven rudras.