Question: who are indra and agni?
Answer: Indra: Agni is generally presented as Indra's twin, they both go and appear together. In chapter 13.3 of the Atharvaveda, Agni is said to become Indra when he illumines the sky. Agni is also called Vishva-Vedāh, "dawn," which refers both to Indra, the Protector, and to the all-knowing Agni.