The sons born of the womb of Danu, daughter of Dakṣa (Daksha), and sired by Kaśyapa(Kasyapa) Prajāpati (Prajapati; Ruler of the people), were known as Dānava (Danava; one kind of demons). Ahala was one of them.
In Brahmāṇdapurāṇa (Brahmandapurana), a list of these sons of Danu can be found. The name of Ahala has been mentioned as one of them.