You're sitting in a soft cozy berth and a big servo is holding the back of your neck causing you to arch it back. Your engine is letting out soft purrs and vibrations. Ratchet is satisfied about having a con like this. Or a former one at that. Not that Megatron would ever accept someone like you once more and not like he's fond of your vulnerability. You're comfortable aside the collar you're wearing which is quite harsh and stiff but that's only to make sure you can't go loose. He has you on a leash. He doesn't want his little pet to go missing or worse leave him and you've already learned what consequences that has.

"All mine. You're going to be good for your owner aren't you little Con?"

His servo moves slowly and strokes your neck and chassis sensually. You shiver and fume extracts from your vents. You don't remember when you stopped being a person and became property. If he's not around he keeps you in a cage. He says it's for your safety and you'd run into danger if he lets you wander. He knows how to make you docile. Just take away basic rights for a few cycles and then if he even gives one pat you'll melt in his servos. It's sickening. But it's not like he cares. You're just a decepticon. If you misbehave he'll teach you a lesson in his own way.