R-3X

RX-24 was an RX-Series pilot droid who flew a transport from Lothal to Garel five years before the Battle of Yavin. The transport was used by the rebels from Lothal in their mission to steal arms from the Galactic Empire.

Behind the scenes
RX-24 was originally a character from  Star Tours, a ride at Disney Parks worldwide (first opened at Disneyland in 1987), where he was voiced by Paul Reubens, who reprised the role in the Star Wars Rebels episode, "Droids in Distress".