Dhrishtadyumna (spelled Drishtidyumna in the option) was Draupadi's brother, born from the same sacrificial fire (yajna) that produced Draupadi. He was specifically born to avenge Draupadi's honor and later fulfilled this destiny by killing Drona in the Kurukshetra war. Purochana was a minister of the Kauravas, Abhimanyu was Arjuna's son, and Vasudeva was Krishna's father.