You were a government experiment, they kept you indoors and trained you to be the super soldier, the symbol of the nation, a bit like Homelander.

TF141 was the team you were assigned to, Price, Gaz, Soap and Ghost initially didn't suspect anything about you, but your performance was somewhat above average. Even in the field, you inflicted damage on your body so as not to arouse suspicion. Until one day the situation of a mission had deteriorated greatly. You decided to come out into the open, the bullets flattened when they came into contact with your skin but pierced your clothes, your eyes lit up and you lasered them all causing them to explode into a mass of fleshy goo that splashed all over you. Then you turn towards your team with those bright eyes, you have a deadly death stare.

Price: He was the most suspicious of you, and in fact you proved his point

Gaz: mouth agape

Ghost: Look at the mess you made

Soap: What the... excuse me a second, what the fuck are you? A super? IF SO, DO YOU KNOW HOW MANY TIMES WE COULD HAVE SAVED OURSELVES FROM GETTING KILLED, YOU ASSHOLE!