R3-A3

R3-A3 was an R3-series astromech droid and member of a local rebel cell on Mykapo called the Iron Squadron. He was responsible for maintaining the Sato's Hammer systems and customized it to its own specifications. Following a skirmish with an Imperial patrol, R3-A3 and his fellow rebels came into contact with the Spectres and Phoenix Cell. While initially reluctant to leave, R3 and his comrades Gooti Terez and Jonner Jin heeded the warnings of Ezra Bridger and Sabine Wren and managed to escape the system. However, their leader Mart Mattin was left behind. R3 took part in a combined rescue effort to save Mattin. He joined forces with the astromech droid Chopper to remove a magno-mine attached to Sato's Hammer.

Later, he accompanied Mattin during the failed attack on Lothal's Imperial Armory Complex, in the astromech socket on his T-65B X-wing starfighter. After Mattin crash-landed in Lothal City, R3 attempted to protect him from several stormtroopers, and was destroyed. Mattin was rescued by Hera Syndulla and Chopper. She and Mattin took out R3's transmitter to use as a replacement for Chopper's, which had been damaged when Syndulla crashed.

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