According to the Ṛgveda (1.20.6), Tvaṣṭā is an artisan of the gods. Later, he is identified with Viśvakarma (vide Viṣṇupurāṇa 3.2.11).
He is counted among the twelve Ādityas born to the sage Kaśyapa in Aditi.
Racanā, the daughter of Prahlāda, was his wife.
Triśiras or Viśvarūpa was his son who had been chosen by Indra to be the priest of the gods (See VIŚVARŪPA for details.). He was ultimately killed by Indra.
Saṁjñā, the eldest wife of Sūrya (the Sun-god) was his daughter.