Indra is the great warrior and king of the gods in the Vedic tradition, where more hymns are devoted to him than to almost any other deity. Armed with the thunderbolt vajra, Indra is the god of storms, rain, heroic power, and victory. His most celebrated Vedic achievement is the defeat of Vṛtra, the serpent or obstructing power who holds back the waters.
In later Hindu literature, Indra remains Devarāja, ruler of the celestial gods, residing in Svarga and riding the elephant Airāvata. Yet the epics and Purāṇas often depict him as powerful but morally fallible—capable of jealousy, pride, fear, and error.
This transformation is important. Indra represents tremendous worldly and celestial authority, but not ultimate reality. Even the king of heaven remains subject to karma, dharma, and higher divine powers. His stories repeatedly show that power without humility becomes insecure, while genuine sovereignty requires recognizing limits.