Seeing these musclebound bird statues spring to life gave you an idea. That harpy form you'd just picked up had a lot in common with these bird jerks. Like, well, being a bird. Maybe it was close enough that if you shifted into it, other bird jerk technology like these security... statues here might think you were one of them, and play nice with you.
In a sense, that was true. As your limbs flipped around and reconfigured, the vibe you were getting from those statues changed from them wanting to tear you limb from limb to them wanting to... really get to know you. They came over, all friendly like, and you couldn't help but notice they were... kinda really hot? Up to that point in your life you'd always been a real man's man, strictly into the ladies, but something about these giant golden super cut birds was really doing if for you. If you'd been thinking straight you might have pieced it together sooner that harpy form here had rewired your brain.
Years later, you'd eventually piece it together. This whole situation with your armor, the vending machines, these statues, it was all a needlessly complicated scheme to overcome the extinction of the bird jerk race. They'd either turned themselves into these statues, or just uh... infused them with their seed? Then they'd left your armor out and various useful upgrades, to get some poor sucker like you lulled into a false sense of security, so that you'd eventually end up trying exactly what it was you had here, shifting into a form that was apparently just like, the ultimate kink for bird people, with the big wings, and the huge breasts and all, with your brain rewired to be really into them, and then they'd just do what it was they did next.
They just came on over, started with a nice shoulder rub, moved down and around to more sensitive places, and before you knew it, instinct took over, and there you were just having absolutely out of this world sex with these two. You'd have thought you'd be more resistant, but this form messed with your brain real bad. It was all of maybe five minutes before they were straight up spit-roasting you, and clearly that had nothing to do with rebuilding their population, they were just into it, and so were you. Neither of them ever seemed to get tired, but once you did, they lead you out through a secret exit, got you all set up on a mountaintop, with a nice comfortable nest, and then they just started taking shifts. One would head out to find you some food, something to drink, maybe some recreational substances, and the other would just, well, plow you until you couldn't stand.
Maybe under other circumstances, your sense of duty or your self image would help you snap out of it and change back, but... the sex was REALLY good. They were statues! They were always literally rock hard! They knew everything about how this weird body of yours worked, probably because they'd designed it. The first time you'd ever even considered changing back was when you laid your first clutch of eggs. You'd been doing a decent amount of egg laying on that last mission, really, but this was different. These were huge. And they had your babies in them, not just explosives.
And that just became your new life. Birthing a new generation of weird bird people on a mountain. You never even really checked back in with that mission you ended up abandoning. Maybe they sent someone else in, maybe the gangsters didn't manage anything really nefarious regardless. They didn't seem super competent, and it's not like this was one of those things where the fate of the galaxy was on your shoulders. You just embraced it, and that was that.
GAME OVER