Jonner Jin Jonner Jin was a human male member of Iron Squadron , a local rebel cell based on the planet Mykapo . In 2 BBY , Jonner and his fellow rebels were involved in a skirmish with an Imperial advance patrol . The Iron Squadron was assisted by the Spectres and the Phoenix Cell , who had come to evacuate civilians from Mykapo . While the Iron Squadron initially declined the Spectres ' advice to leave the system before Imperial reinforcements arrived , Jonner along with Gooti Terez and R3 - A3 saw reason and departed with them . However , their captain Mart Mattin stayed behind to fight the Imperials . Jonner , Gooti , R3 - A3 and the Spectres later joined forces in a successful mission to rescue Mart . As a result , the Iron Squadron joined the rebellion . Biography . Joining the rebellion . Jonner Jin joined the Iron Squadron during the Age of the Empire . The Iron Squadron was a local rebel cell based at Mykapo and consisted of the human s Mart Mattin , Mart ' s father , the Theelin Gooti Terez , and the astromech droid R3 - A3 . The Iron Squadron operated from a YT - 2400 light freighter called the " Sato ' s Hammer " . After Mart ' s father died , Mart assumed leadership of the cell . Mart was not interested in the wider rebellion and did not keep in touch with his uncle Commander Jun Sato , the leader of the Phoenix Cell . The Iron Squadron harried Imperial forces in the system . In 2 BBY , the Galactic Empire imposed martial law on Mykapo . The Iron Squadron clashed with an Imperial advance patrol . During the skirmish , the Iron Squadron ' s hyperdrive sustained damaged . Shortly later , the Spectres and Phoenix Squadron arrived to evacuate rebel sympathizers on Mykapo . The Spectres ' ship " Ghost " managed to destroy the TIE fighters attacking " Sato ' s Hammer " . This enabled Iron Squadron to destroy the Imperial " Gozanti " - class cruiser with explosives . Following the skirmish , Mart invited the Spectres ' leader Hera Syndulla and her crew to meet with the Iron Squadron . Jonner and Gooti welcome Hera and her crew Ezra Bridger , Sabine Wren , and the astromech droid Chopper aboard their ship . When Sabine noted the rundown state of the freighter , Jonner replied that they did not need a hyperdrive . He led the Spectres to their captain Mart , who was waiting in the cockpit . Jonner sided with his captain Mart when the latter objected to Hera ' s advice that they leave the system before Imperial reinforcements arrive . He even mockingly asked what " evacuate " meat with Mark finishing off that it meant running away like a coward . He also expressed his unwillingness to listen to Hera ' s arguments . With the two sides unable to agree , Hera and her crew left the " Sato ' s Hammer " and returned to the " Ghost " . Ezra managed to convince Hera to let him , Sabine , and Chopper stay behind so that they could repair the Iron Squadron ' s hyperdrive as a means of winning them over . Hera agreed but warned them that they had to leave on the shuttle " Phantom II " at the first sign of Imperial activity . Jonner and Gooti watched while R3 - A3 , Sabine , and Chopper repaired the hyperdrive . Mart thought it was a waste of time and returned to the cockpit . When Ezra advised Jonner and Gooti that they had to be ready to leave if they could not fix the hyperdrive , the two Iron Squadron members expressed an unwillingness to leave their captain and their home . Ezra then responded that they had to choose their battles carefully . R3 , Sabine , and Chopper managed to repair the hyperdrive but their efforts came to naught when Mart redirected the power to the ship ' s laser cannon s and deflector shield s . Jonner and the other rebels quickly discovered that Imperial reinforcements under Admiral Kassius Konstantine had exited hyperspace . Upon seeing Konstantine ' s forces , Jonner and Gooti realized they were outgunned and outnumbered . He and Gooti tried to reason with Mart but their captain was determined to fight the Empire . After the ship ' s power broke down , Mart ordered an evacuation . Jonner , Gooti , R3 - A3 , and the Spectres fled aboard the " Phantom II " but Mart changed his mind and decided to fight Konstantine ' s forces . Konstantine easily neutralized Mart ' s bombs and disabled the " Sato ' s Hammer " engines . Jonner and the other rebels were forced to leave Mart behind and fled into hyperspace . After rendezvousing with the rebel fleet , Jonner attended a briefing with Hera , the Spectres , Commander Sato , and the former Clone Captain Rex . Sato sanctioned a mission led by Hera to rescue Mart . Jonner and Gooti were overjoyed they were going back to rescue their captain . During the rescue mission , Jonner and Gooti manned the cargo bay of the " Ghost " . They opened the cargo bay doors which allowed R3 - A3 and Chopper to fly out on their rocket booster s and disable a magno - mine that had been planted on the " Sato ' s Hammer " . Under Hera ' s orders , they attached the " Ghost " to " Sato ' s Hammer " . After picking up " Sato ' s Hammer " , the rebels were reinforced by Commander Sato who had arrived with a CR90 corvette and several A - wings . Before escaping into hyperspace , the rebels dropped the magno - mine over Konstantine ' s light cruiser ; badly damaging the Imperial ship . Jonner then watched as Grand Admiral Thrawn ' s Imperial Star Destrpyer " Chimaera " exited hyperspace . Jonner and his comrades realized the sheer size and power of an Imperial Star Destroyer and that it was folly to take on one alone . Jonner , the Iron Squadron , and their rebel allies then traveled to the Phoenix rebel base Chopper Base on the planet Atollon . There , Jonner and Gooti hugged their captain after he had reunited with his uncle Commander Sato . Personality and traits . Jonner Jin was a bald and pudgy human male with blue eyes . He was the muscle of the Iron Squadron and was deeply loyal to his friends Mart Mattin and Gooti Terez . Behind the scenes . Jonner was voiced by Eric Lopez in " Iron Squadron , " the eighth episode of the third season of " Star Wars Rebels " . He was named after John Harper , a cameraman , editor , and producer on " The Star Wars Show " .