Dantavakra is the third and last birth of Vishnu's gatekeeper, Vijaya, while his brother Jaya is Shishupala.
After learning of Krishna's intention of eloping with Princess Rukmini during her svayamvara, he confers with his allies in the city of Kundina, and expresses the desire to contract a friendship with the deity, realising that he is God himself.
After the Pandava general Sahadeva defeats him, making him pay tribute, he is reinstalled on his throne.
He attacks Krishna, who is on his way to Dvaraka, after the Rajasuya sacrifice (which Dantavakra had not attended, to protest the killing of Jarasandha) to avenge Shishupala, and his friend Shalva.
Unfazed, Krishna strikes his chest with the Kaumodaki, causing him to spit out blood and perish in the mace-duel.