Titus Black is an agent with Firestorm.
Firestorm is a black-ops organization within the U.S. Intelligence community responsible for operating in the shadows to take out those foreign enemies determined to destroy the Western world. It is headed by a powerful senator from Texas named Blunt who provides the funding through appropriations for an unspecified Project Z. Leading this project, codenamed Firestorm, is a military general named Johnson but there is no doubt in anyone's mind that it is Blunt who runs the show.
It is obvious from the facts presented that Black has been an agent for some time and has proven many times over that he can get the job done. It is also obvious that Black loves action and does not mind violence. "If he was going to fight, he preferred the hand-to-hand combat variety" but if it moves to weapons, he is fine with that as well.
Black's history is somewhat shrouded in mystery but two facts come out of some note. One is that Black has major issues with the death in Afghanistan of his father which occurred as a result of a bad operation spearheaded by a man who would later run for President. The other is what sounds like major bad issues with his stepfather, resulting in Black having 'thousands' of reasons to make sure he want to remember him.
Also of interest is a personal issue mentioned early on in the adventures, that of a possible death wish. Seeing an assignment "as a suicide mission was all Black needed to know to sign up. His secret death wish wasn't so secret-and every superior who learned this about Black took advantage of that information. Black liked it that way."
In Firestorm each field agent has a handler watching out for him. In the case of Black, that person is Christina Shields, a woman who takes the flack that Black habitually hands her and gives it back with force. She is someone I would love to know more about.