After helping the members of the Bad Batch remove their inhibitor chips and stop Wrecker from wreaking absolute havoc, Captain Rex went outside of the Venator med bay on Bracca to make a call. On Rex’s comms device, a mysterious voice can be heard and Rex agrees to Rendezvous with him… So who is Rex in contact with? Lets dive into it!
The first major option that Rex may have contacted is Commander Wolffe, former Commander of the 104th battalion, also known as the Wolf Pack. Thanks to a line that Rex said when taking out Wrecker’s inhibitor ship in the venator, we know that Wolffe and also Gregor, don’t yet have their chips out Rex said “I’ve never been on this side of it before”, meaning he hasn’t yet had the chance to help his brothers out. This would make Wolffe a perfect candidate, as we know it has to happen relatively soon.
Now it is possible that because Wolffe’s chip is in, that it did activate and he is still serving the Empire, and therefore would not be in conact with Rex. But there is one thing that points against this.
During the Battle of Khorm, Commander Wolffe fought alongside the Wolfpack to capture an agrocite production facility for the Republic, against fierce separatist resistance. During the battle, Wolffe came face to Face with Sith Assassin Asajj Ventress, who proceeded to swiftly slash him across the face, taking out his right eye, and leaving untold damage to the surrounding area. The commander was then forced to get a new, cybernetic eye to replace his old one and to fix up the damage done to the right side of his head.
The forceful swipe to Wolffe’s head by Ventress may have caused damage to his inhibitor chip, especially since it’s on the exact same side as where he took the hit, and is eerily close to the scar left by her blade. This could mean that he did manage to refuse Order 66, because his chip didn’t compel him to follow it, making it very possible that he was the one in contact with Rex.
Rex did also mention that “it was rare for a clone not to be immune to the chip”… The way he said it really did make it sound like he already knows of some other cases where this happened, again strongly pointing to Wolffe or Gregor, or even a brand new clone who we haven’t met yet… If Rex hadn’t seen any cases of the chips not working before, he’d surely be way more shocked and even call it impossible, but instead he brushes it off, meaning he probably has seen it before.
The only thing that possibly points away from it being Wolffe is that it has been implied by the Writers of Star Wars: Rebels that Wolffe may have actually followed Order 66 and had his behaviour modified to follow any order by the Republic. This isn’t confirmed whatsoever, but it could be the case…
So that leads us straight to the next option, Commando Gregor.