How old is Marcus in gears of war 2

Marcus is multiple ages in the gay game of gears of war 2 at the start he is 26 but by the second mission he is 40 and if u watch a clip near the end of the game u will see dat Marcus actually dies and then u continue the game as a black paodephile named david who's age ranges from 73-103
Marcus-"Can we pretend that airplanes
In the night sky
Are like shooting stars "