Very little is known about Freedom Fighter's motives and history. He appears to be intensely patriotic, having modeled his appearance after both the Autobot faction symbol and the face of his leader, Optimus Prime. In fact, he may be deranged.
Freedom Fighter possesses the ability to intercept electromagnetic radiation with frequencies ranging from roughly 530 kHz to 1710 kHz, and can emit sounds -- at varying intensity -- which represent any amplitude modulation found in the intercepted radiation. Electromagnetic waves of this sort are sometimes used for communication by many species, making Freedom Fighter a valuable resource for the Autobot army.
He is unusual for a Transformer in that he not only has no humanoid robot mode, but no ambulatory mode at all -- he has no limbs or visible means of propulsion. It may be that he wished to completely dedicate his time and energy to his primary job of monitoring radio broadcasts, and had his body modified accordingly.
Freedom Fighter exists only as an AM radio (which came with a carrying strap) released sometime in 1984 or 1985. His transformation sequence, shown at right, was somewhat awkward.