R-3PO

R-3PO is a protocol droid and a background character in a cutscene in Chapter 3, Episode 2. He plays a bigger role in Chapter 12, where he can activate certain objects. He also plays as the vessel for Smiley Man (Matrix) for the boss battle. He at the end of the fight gets his core removed and destroyed, technically killing him. He later receives a new core and goes back to normal R-3PO.