Iron Squadron is a group of rebels who fought agains thte Empire when their homeworld, Mykapo, was under Imperial rule. It contained Mart Mattin, Gooti Terez, Jonner Jinn and R3-A3.
They were once led by Jun Sato's brother and Mart's father. However, when Mart's father died, he took over. They met the Ghost Crew and befriended two kids their age, Ezra Bridger and Sabine Wren. Hera Syndulla attempted to convince them to leave Mykapo with other rebels, but they were too stubborn to leave. However, Gooti and Jonner were convinced by Ezra that they had to live to fight another day. Though Mart stayed behind, Jonner and Gooti later joined the Ghost crew in saving him from Admiral Konstantine. They later reunited on Atollon, officially becoming part of the rebellion. They operated from a YT-2400 light freighter called Sato's Hammer.[