you were a experiment called "Speed" not only you were fast but very unpredictable and had the bloodthirst to kill anyone when told

while they rank everyone by color they put you on black which meant the most dangerous, while you were sitting down in your bed in the room they made for you, a scientist came in with few bodyguards "Hello...he said calmly flipping through his papers you must be Speed?" the scientist said looking at you with a smile trying to get you to trust him