Abhimanyu was one of the gods who belonged to Tviṣimanta (Twishimanta) gaṇa (gana; genus) in Svāyambhuva (Svayambhuva) Manvantara.

Vāyupurāṇa(31.9)
Brahmāṇḍapurāṇa (Maharṣi)(1.13.95)