Suprateeka was the name of Bhagadatta's elephant that attacked Arjuna on the 13th day of the Kurukshetra war. Bhagadatta, riding Suprateeka, nearly killed Arjuna with his Vaishnavastra before Krishna intervened and took the weapon upon himself. Ashwathama was Drona's son, Gajraaj is a common elephant name, and Suparna is related to birds.