C1-10P, commonly known as "Chopper," or simply "Chop," was a masculine C1-series astromech droidmanufactured by Industrial Automaton that was active during the Clone Wars and the early years of the Galactic Empire. He was a member of the Spectres, a rebel cell led by the Twi'lek captain Hera Syndulla and the Jedi Kanan Jarrus that fought against the Empire. He was responsible for maintaining the Ghost, a modified VCX-100 light freighter which served as the rebel cell's main base of operations.
During his time with the crew of the Ghost, Chopper took part in numerous raids and missions against Imperial targets. Due to his old age and lack of regular maintenance, Chopper developed an argumentative, cantankerous, and mischievous personality. Despite these personality flaws, he was a loyal member of his rebel crew. Later, Chopper and his fellow rebels joined the Phoenix Cell, which was part of the rebellion. In 3 BBY, he befriended the Imperial RA-7 protocol droidAP-5. Together, the two played an important role in helping the Phoenix rebels discover a new base on the planet Atollon, which was named Chopper Base in Chopper's honor.
Over the years, Chopper would continue serving the Spectres as the group became involved in the Alliance to Restore the Republic. Chopper would also remain by Hera's side during the Galactic Civil War.