BAHURŪPA One of the eleven Rudras. Eleven Rudras were born to Kaśyapa by his wife Surabhi. Surabhi, who had been purified by Maheśvara whom she had pleased by her penance, got as sons, Aja, Ekapād, Ahirbudhnya, Tvaṣṭṛ and Rudra. The renowned Viśvarūpa was the son of Tvaṣṭṛ. The eleven Rudras are Hara, Bahurūpa, Tryambaka, Aparājita, Vṛṣākapi, Śambhu, Kapardin, Raivata, Mṛgavyādha, Sarpa and Kapālin The number of the Rudras is one hundred lakhs. They pervade everything moving and not moving.
[Agni Purāṇa, Chapter 18] .