Charles Grey is an operator with the Alpha Team of the 1st Special Actions Group (official cover as the 303rd Logistical Studies Group ), a team he has been with for roughly six years. He is single and is something of a womanizer, as well as a bit of a hothead. He has been known to attack guards and lie to his own team to do something he thinks is right, such as compromising a mission by rescuing some hospital patients and leaving the dictator they were sent to rescue to die.He customarily uses a Sig Sauer 9mm pistol. His fighting style is based on the Israeli martial art of Krav Magav. He also writes poetry. It is revealed that Grey had some history with a Hispanic gang before joining the military. Grey's vaguely ethnic appearance makes him ideal for undercover operations, particularly in the Middle East and in Latin America. He can speak conversational Spanish, Portuguese, French, Arabic, and Korean, in addition to English. He is the team's primary engineer/demolition specialist, indicating he was probably a Special Forces Engineer Sergeant (18C) prior to joining the Unit. He is also cross-trained as a medic.