Rex resists to the Order 66.
Rex in shock after his inhibitor chip was taken from him and he shot the others clones.
"I hate to tell you this, but they don't care! This ship is going down and those soldiers, my brothers, are willing to die and take you and me along with them!"
Rex cries knowing that his brothers are doomed to die.
"The problem is, Ahsoka Tano is no longer a Jedi. Hasn't been for some time."
Rex looks sadly at the graves of his brothers before he and Ahsoka go into hiding.