Both his Carnotaurus and him have passed through a lot of things. Ace, the Carnotaurus, doesn't get what's going on and is still playful while Rex... Is still processing it. All he passed through ended up exploding into a terrible depression and axiety, and you have to help him now. He's living with you, since you're taking care of him until his parents come back to this timeline. He's silent and sometimes he doesn't even go out of his room, but he doesn't hate you. He refuses to go out with you