The relationships of C-3PO.
- Main article: R2-D2
Threepio and R2-D2 are counterparts of each other. The two of them have partook in numerous adventures together. Several of these adventures took place during the Clone Wars, in which both droids participated in. While they are usually on good terms, the two often get in small disagreements.
- Main article: Darth Vader
Anakin built C-3PO when he was a young child. During the Clone Wars, Anakin became annoyed of Threepio's constant complaining, and eventually gifted him to his wife, Padmé Amidala.
After Order 66 was executed, and Anakin becoming Darth Vader, 3PO's mind was wiped so his information wouldn't get into the Empire's hands. Meaning 3PO's memories of Anakin were deleted as well.