Since Sentinel made it so that a ton of bots had their t-cogs taken out before they came online, that means that he would have had a massive amount of spare cogs lying around.
What did he do with them?
My brother thinks he gave them to the Quintessons, but what use would they have for a bunch of t-cogs?
I figure he squeezed out what little energon they may have had, and then incinerated them.










