R2-D2 was an astromech droid and companion of C-3PO. He was purchased from Watto on Tatooine by Qui-Gon Jinn, along with Anakin Skywalker. Anakin took R2 as his own astromech droid. R2 soon became the brains of many of Anakin’s missions. He traveled with him back to Tatooine, ten years later, where he met C-3PO. They quickly became close partners.