In Hindu mythology, Indra is the god of lightning, thunder, storms, rains, and rivers. He is the king of the gods in the ancient Vedic religion and is considered to be the most powerful of all gods. Indra is often depicted as riding on his mount, the white elephant Airavata, and wielding his weapon, the vajra, which is said to be made of thunderbolts. He is also associated with the celebration of festivals such as Holi and Diwali.