R2-D2

"Well, I happen to be very fond of these droids." - Bail Organa

R2-D2 was an R2 Series Astromech Droid owned by the Naboo security guard before being owned by Anakin Skywalker during the Clone Wars and formed an attachment to protocol droid C-3P0. After the Clone Wars ended and Anakin became Darth Vader, R2 and 3P0 were placed under the care of Imperial senator Bail Organa and helped him and his Jedi Ally, Ahsoka Tano form the Rebel Alliance to fight the new Galactic Empire. R2 and 3P0 would be used by the Empire many times to get secret Imperial information about plans to destroy the rebels, like the Plot of the T-17 Ion disruptors. During a mission, the two encountered The Ghost Crew and brought information of their existence to Organa, allowing him to get the rebel group to join his rebellion.