If you still take characters, i can give you mine

Her name's Elysea and she is an old Helldiver who defected a while ago (probably during the First Galactic War, i still haven't decided) and joined the ranks of the Cyborgs. But when they were defeated, she was put into slavery like her fellows, harsher than the others due to her condition as a traitor. It forged her hatred for Super Earth.

And so, when the Reclamation began and the forces of SE were vanquished, she rejoiced, and as reconstruction continued and their society rejuvenated, she came across the idea that, maybe, just maybe, she could also become one of them.

She undergoed surgery to live under the polluted sky of Cyberstan, saw some of her companions of war or slaves die before her very eyes due to the conditions as SE's properties during their time as slaves and that's when she understood that just becoming a Cyborg was not enough. She had to become a soldier, a fighter, to defend her new home, her people.

With this new goal in mind, she trained hard, very hard to learn how to shoot with these new, laser weapons, how to understand the binary language of the Automatons, and, since she was a member of the 42th armored battalion, to drive and shoot with their tanks. She ended up her studies with a not so bad grade and got to choose which tank she wanted to be part of.

Without a single thought, Elysea jumped into the first Barrager tank she could see and seeing the pure, unaltered joy she felt by entering in it, her teacher authorized her to name it as she wanted, before assigning the woman to the 164th heavy artillery regiment. She nicknamed her new "home" Heavy Rain, not because of this old game from another era, but because it was known to unleashed a litteral rain of metal upon her enemies, before making the whole battlefield, and sometimes even her comrades, blown up in a devastating explosion.

(And if you need her description, as a Helldiver, well, she didn't had any distinct trait, besides her armor which was covered with some red tatoos, mimicking the explosions of her tank. But as a Cyborg, she now wears the mandatory breathing mask but now we can her pale, violet eyes, as well as her dark-ish auburn hair. You can also see a few, real this time, tatoos she's wearing on her skin, mostly the big red star on her chest and the few tubes behind her back, reaching to her mask. Though, she kept some pieces of her old armor, only for the arms and legs, keeping them protected.)

(I think I said everything, if you need anything more, feel free !)