The son of Matsya, the king of Virata. He had a sister, also named Uttara. He was also called Bhuminjaya as per Mahabharata Virataparva Chapter 35 verse 9. He had also accompanied Matsya to Draupadi’s swayamwar as per Mahabharata Adiparva Chapter 185 verse 8.
See Arjuna for Uttara and Arjuna.
Uttara participated in the Mahabharata war. He fought with Virabahu on the first day as per Mahabharata Bhishmaparva Chapter 45 verse 77. Uttara was killed by Shalya as per Mahabharata Bhishmaparva Chapter 47 verses 36-39. Since he died a warrior’s death, he was added to the vishwadevas as per Mahabharata Swargarohanaparva Chapter 5 verses 17-18.