When we recorded [Moana], I would do all of the stuff and then save all the big screaming for last so that you can really blow it out and ratchet it up every time, get that perfect panicked pitch.
Alan TudykR2-D2 is like that, but I think because he doesn't speak actual words, his jokes don't land. It's really a hindrance. And the same with BB-8. But Artoo is a lot stronger.
Alan Tudyk