Do you think that because Star Wars: The Clone Wars is ending we may see more of Captain Rex in Star Wars: Rebels?
Since Star Wars: The Clone Wars won’t be getting proper closure due to the cancellation, it certainly would be nice for characters like Rex to show up in Rebels. And since that show will apparently be taking place approx 8 years after Ep3, it would be entirely possible for him (and other clones) to make appearances be they Imperial troopers or defectors.
Gunship, come in. Hawk, we need an evac in the south tower.
SW:TCW s01e15 - Narglatch Cavalry
Its advanced navigational systems permit rapid hyperspace jumps at a moment’s notice. That puts this carrier battle group in the class of the Imperial Fleet’s most important and powerful resources.
IMPS: The Relentless [X]
"Your designation is CC-5576-39. You were a captain and part of an elite squad. A clone commando."
"Sir, you sent for us?"
"It’s a dangerous assignment, but I want you two up on the bridge in sniper positions."
"Yes, sir. We’re on it!"