Admiral Pryde
The Clone Wars will likely end just as the Empire is being born. That being said, we probably won’t see Admiral Pryde as an Imperial Officer in The Clone Wars, but we could see him as a loyal to Palpatine Republic Commander or solider of some sort.
Admiral Pryde says in The Rise of Skywalker that he served Palpatine in the old times. He doesn’t go as far as saying he served him from the start, but his age would certainly make that possible.
Pryde is probably in his late 60s to early 70s in Episode IX. This would put him in his late teens or early twenties by the time of Revenge of the Sith. With that film going on concurrently with the final episodes of The Clone Wars, it’s not far-fetched to think Pryde could make an appearance in some type of battle setting or scene.
Maybe it’s just a cameo and perhaps he’s nothing but a lowly officer at this point but it would be an easy connection to make. Or maybe they take it a bit further and give us a reason why Pryde is so fiercely loyal to Palpatine, even after knowing what kind of evil monster he truly is. Either way, Admiral Pryde’s chances of making an appearance in the final episodes of The Clone Wars is really quite high.