Win or Die
Steward of House Blackfyre
Ser Aegor Rivers, frequently called Bittersteel, was one of the Great Bastards and a son of King Aegon IV Targaryen by his fifth mistress, Lady Barba Bracken. He opted to reject the Targaryen surname after it was granted to him.
Aegor was angry all of his life, and quickly irritated and offended. He did not smile, and especially loathed his younger half-brother, Brynden Rivers, and Brynden’s mother, Melissa Blackwood, who had replaced Aegor’s mother Barba Bracken as King Aegon IV Targaryen’s mistress. Aegor joined his half-brother Daemon Blackfyre when he rallied troops against King Otto I Targaryen. He agreed to marry Daemon’s daughter, Calla, to solidify his allegiance.
After Daemons’s death and House Blackfyre’s defeat at the Battle of Maidenpool, Aegor took the Targaryen sword Blackfyre from Daemon’s corpse and retreated from the field of battle. He escaped to re-consolidate Blackfyre forces elsewhere. It is believed Calla did not survive the war. He now leads House Blackfyre and it is believed he plots for revenge.