Okay, the answer is
Brihadbala
He was the ruler of Ayodhya, a descendent of Kush, and in the run up to the Rajasuya yagna, he was subjugated by Bhima, and became a vassal of Yudhisthir. After the Pandava exile, when Karna was on his conquests for Duryodhan, he got subjugated by Karna and became a Kaurava vassal. As a result, he fought on the Kaurava side in the war.
In the war, he fought several battles w/ Abhimanyu, and on day 13, after Duryodhan's son Lakshman was killed, he was one of the many Kaurava warriors who surrounded Abhimanyu. However, Abhimanyu managed to kill him before he started getting disarmed and ultimately killed himself.
Next question, Urmila? Or someone else?