Lieutenant Marcus E. Washington was a character in Modern Warfare 2: Ghost.
He was part of the third team that went after Manuel Roba and failed. He was captured and brainwashed at Roba's facility at Coahuila, Mexico. After a year's worth of brainwashing, he was sent back to the U.S. together with his friend, Kevin Sparks.
After a few months, he went to Spark's apartment to find Simon Riley holding a knife at Spark's throat. He drove him out and together with Sparks, they killed Riley's entire family and moved to RAF Bonnington. While Washington was sleeping, his throat was slit.