It's about an OC who was originally human but was turned into a T-Doll so his life could be saved.

When Sangvis attacked his home town, a bomb was dropped from the sky and the area he was in blew up. Desperate to save his life, Griffin & Kryuger turned him into a T-Doll. Like he was being turned into Inspector Gadget. Now that he was a T-Doll, Griffin & Kryuger wanted him to fight with them against Sangvis in which he accepts and wants to fight.

He trained on how to fight. He trained on how to use multiple types of guns and weapons. He also trained in other things like how to drive tanks and how to pilot aircraft like jets. He's also an otaku and a gamer.

Since his family wanted him to be safe, he was given an artificially intelligent electronic computer module in the body of a highly advanced, very mobile, robotic car similar to KITT from "Knight Rider". The car is a black wrangler. It is made of indestructible alloy, bullet proof glass, indestructible tires, water proof, fire proof, and can't be hacked.

It is equipped with lots of weapons and gadgets which I can't list them all. But what I can list is that the car has a winch, has a list of KITT's gadgets and weapons and some of the gadgets and weapons used in "Cars 2". And the gadgets and weapons used the Gadget Mobile from "Inspector Gadget". The voice is male and is a he like KITT and the Gadget Mobile. When the back door of the car opens up it reveals weapons that are stocked. The car's name is Wrangler.

I thought about also giving the OC mobile command trailer for the car which also serves as a mobile home when needed to when going out on missions involved with not being able to return to base for a few days or even a few weeks. I also thought about him having a robotic sentient fighter jet. Plus a briefcase computer that can call in an AC-130 gunship. And gadgets like a scouter from "Dragon Ball Z" and a gadget watch. Because he used to be human, he works and fights against Sangvis independently. He works well together with his car, Wrangler.

His love interest is The main heroine, M4-A1. I've been thinking if he should first meet her during the events of fighting against Executioner when being ordered to find M4-A1 or if he should first meet her before the main storyline. Kryuger gives him an Oath ring to give to a T-doll he feels close bonds with. He gets assigned to Area S09's Base 794 and works under Gentaine.

That's it for this random idea. There are Girls Frontline x reader FanFictions out there but none of them involve any readers being turned into a T-Doll.