At first, befriending the Autobots had been fun and exciting, but when you were captured by the Decepticons, things went downhill fast.
You were told horror stories of how the Seekers use tiny organics like you for target practice, how Skullcruncher likes to eat humans to top off his energon reserves, how Shockwave scares even the other Decepticons, how Megatron likes slowly crushing the Autobot's human friends between his digits and sending the live recordings to Optimus with the help of Soundwave.
So, your relief when Megatron simply looked you up and down, and told Bombshell to do whatever he wanted was immense.
You'd heard no horror stories about the insecticon, so it couldn't be that bad, right?
Bombshell had immediately made a loud sound in between a hiss and a squeak, seemingly in surprise, probably due to the fact that Bombshell is a beetle.
He took you into his servos carefully, ever so gently, like a child being given a brand new, very breakable toy, thanked Megatron profusely, and some part of you wondered if Bombshell was just going to keep you like a human pet. Humiliating, sure, but there are worse things.
You were wrong. So very wrong.
As it turns out, Bombshell just wanted to take you apart and see what makes you tick. Replacing your soft, squishy innards with mechanical mechanisms one by one, seemingly as little more than a hobby to be worked on outside of his main duties as a Decepticon.
The metal bites into what little flesh you have remaining, making movement painful at best and borderline impossible at worst.
It's called Cyberforming. You're sure you've heard someone say it a while ago, was it Bombshell? He rarely speaks directly to you, mostly only to Kickback and Shrapnel, the other two Insecticons.
Bombshell's makeshift laboratory is brighter than Shockwave's according to Kickback, who takes care of your basic needs somewhat begrudgingly due to his lazy nature, but it's nice to have the ceaseless chittering of the laboratory directed at you for a change.
The lights flicker on, and the cogs and gears in your chest whir to life painfully as you flex your flesh and bone digits (fingers. They're your fingers, not Cybertronian digits.) as much as you can and try not to look down at the hole in your chest showing a cold, damp mechanical heart that Bombshell hasn't finished tinkering with yet.
"Experiment. I bring exciting news!" You can't see the look on Bombshell's faceplate due to his visor and that thing he has over his mouth, that looks sort of like a medical knight's helmet, but you can hear the slight tremour of joy in his vocaliser (voice, it's a voice, stop using Cybertronian terms!) that means nothing good.
"Lord Megatron has decided to allow me to continue working on you instead of my regular duties, and permitted me to work on Cyberforming that squishy little processor of yours! When I'm done, you'll finally go back to that Autoscum you keep squealing about... With one of my cerebro-shells of course!"