Uru

Uru was the third greatest Balrog in existence. He served under Lungorthin, Gothmog, Sauron, and Morgoth with devotion. The most loyal of the Balrogs, Uru was present with the fire spirits that came to rescue Morgoth from Ungoliant's ensnarement. Uru fought in the War of Wrath where he was killed by Ingwion. Uru left his mark on Arda, he enjoyed burning everything that he could see, his very presence scorched the land his green fire gave off a sickly and eerie look for a Balrog, as such, he was the third of the seven Balrog lords.