You were born on Earth, but you never knew your parents. A child of the streets, you learned to live by your wits and guts, surviving in the hidden underbelly of the megatropolises of humanity's homeworld.
Eager to find a better life, you joined the Alliance military when you came of age. You volunteered for an expedition to Akuze: a lush world on the outskirts of Alliance space that had suddenly dropped out of contact. Arriving on the surface your patrol found the settlement intact, but no survivors.
At nightfall, the thresher maws struck - mindless abominations of teeth and tentacles that rose up from beneath the earth. Constant gunfire couldn't drown out the shrieks of your fellow soldiers as they were dragged down to a gruesome death.
Fifty marines died on Akuze; you were the only one to make it back to the landing zone alive. A monument on the planet commemorates the massacre, a grim reminder of the price humanity must pay as they spread throughout the stars.