According to Skandapurāṇa (Skandapurana), Ūrdhvavāhu(Urdhvavahu) is a Daitya (a kind of demon). He aided a demon-king called Kuśa (Kusa), in his battle against Kṛṣṇa (Krishna).

Skandapurāṇa Vols. 1-7((Prābhāsa/Dvārakā) 20.27)