The clones didn’t stick around, though. Less than ten years after the Empire was declared the last of the clones were decommissioned. Except, apparently, for 622, and no, I don’t know anything about what might or might not be in his head. The Imperial military is made up of volunteers, not clones. Just people, who believe the Empire’s lies, or who don’t have another choice.

[ People don’t need control chips in their heads to do evil things, that’s for sure. Kanan has no problem understanding that people who believe they are good and morally correct will commit atrocities if given some kind of justification. ]

If 622 has something in his head, I don’t know what purpose it would have. The Emperor doesn’t need to forcibly control his troops. Plenty of people are willingly loyal to him. All he did to the clones was make them believe the Jedi were traitors to the Republic. It didn’t take long for him to convince most of the rest of the galaxy, too.

[ He sighs, pinches the bridge of his nose. It’s one of his greatest fears here as well - that the populace will somehow be turned against him, just for calling himself a Jedi. ]

And I don’t know who else would have information about them here. Anakin Skywalker, maybe? He joined forces with Palpatine, or so I hear.