Gayatri is the manifestation of Saraswati and is often associated with Savitṛ, a solar deity in the Vedas, and her consort in the Puranas is the creator god Brahma.
Most of the scholars identify Gayatri as the feminine form of Gayatra, another name of the Vedic Solar god which is also one of the synonyms of Savitri and Savitṛ.
One of the bronze images of Gayatri dated back to 10th century CE was obtained from Champa region and now preserved in Delhi museum.
It appears with five faces and ten hands holding, sword, lotus, trident, disc, skull, Varada in left and goad, noose, a manuscript, the jar of ambrosia and Abhaya in right.
Another recent depiction is accompanied by a white swan holding a book to portray knowledge in one hand and a cure in the other, as the goddess of learning.
[14] She is also depicted four-armed, seated on a swan, holding weapons symbolising the Trimurti: The Vedas of Brahma, the discus of Vishnu, the trident of Shiva, and Varada mudra.
[15] As mentioned in Taittiriya Sandhya Bhashyam, the three feet of Gayatri is supposed to represent the first 3 vedas (Ṛk, Yajus, Sāma).
They are: 1.agni, 2.prajāpati, 3.soma, 4.īśāna, 5.savitā, 6. āditya, 7.bṛhaspati, 8. maitrāvaruṇa 9.bhaga, 10.āryamaan, 11.gaṇeśa, 12.tvaṣṭā, 13.pūṣā, 14. indrāgni, 15.vāyu, 16.vāmadeva, 17.maitrāvaruṇi 18. viśvedevā, 19. mātṛkā, 20.viṣṇu, 21.vasu, 22. rudra, 23.kubera and 24.aśvins The Padmapurana (in Sṛṣṭi Kānḍa) mentions 24 Adhi-Devatas (presiding deities) for each of the 24 letters of Gayatri mantra.
They are 1. sumukha,[g] 2. sampuṭa, 3. vitata, 4. visṛta, 5. dvimukha, 6. trimukha, 7. catuḥ, 8. pañcamukha, 9. ṣaṇmukha, 10. adhomukha, 11. vyāpakāñjali, 12. śakaṭa, 13. yamapāśa, 14. grathita, 15. sanmukhonmukha, 16. vilamba,[h] 17. muṣtika, 18. matsya, 19. kūrmah 20. varāhaka, 21. simhākrānta, 22. mahākrānta, 23. mudgara, 24. pallava, 25. triśūla, 26. yoni, 27. surabhi, 28. akṣamāla, 29. linga, 30.
[21] According to the Matsya Purana, Brahma's left half emerged as a female, who is celebrated under the names of Sarasvati, Savitri, and Gayatri.
According to Varaha Purana and Mahabharata, Goddess Gayatri slew the demon Vetrasura, the son of Vritra and river Vetravati, on a Navami day.
[31][32] The popular form of Gayatri with five heads and ten arms was initially found in Saivite iconographies of Manonmani in North India beginning from 10th century CE.
This could be the root for the sublime aspect of Gayatri explained in the later puranas as the killer of demon Vetra identifying her with Adi Parashakti.