A leader of the Galactic Senate's Loyalist faction, Mon Mothma opposed Supreme Chancellor Palpatine's policies during the final days of the Repulic. Working in secret, she helped found the Rebel Alliance, and served as its civilian leader during the long struggle against the Empire.

The Profundity began its life as a daring ruse: it was built as a tower in a city beneath Mon Cala’s northern ice floes, and launched into space when the Empire subjugated the planet. A quick conversion by Mon Calamari engineers turned the Profundity into the Alliance’s flagship – a modified MC75 star cruiser defended by laser cannons, torpedo launchers and a complement of starfighters.

The planet Scarif would be a beautiful tropical paradise if not for the presence of a major Imperial military installation. Scarif is the principal construction facility for the vast Imperial war machine. The world is enveloped in impenetrable deflector shields and is heavily defended.

The Mon Calamari people are a humanoid, aquatic species with high-domed heads, webbed hands and large, goggle-like eyes. They hail from the oceans of Mon Cala, a planet they share with the Quarren. During the Clone Wars, differences between the two cultures were fanned by Separatist troublemakers to erupt in civil war. During the Galactic Civil War, the Mon Calamari were said to be the soul of the Rebel Alliance. The Empire pressed these gentle, amphibious people into war by subjugating their watery world. In retaliation, the Mon Calamari became one of the key species of the Rebellion, supplying badly needed warships to the outnumbered Alliance fleet.

The uppermost ranks of the Rebel Alliance are known as High Command, and include both military officers and a cabinet of senators who serve as ministers. As Alliance chief of state, Mon Mothma sits at the pinnacle of High Command, but encourages open discussion and even debate among her military and civilian advisors.

The Rebel Alliance stood bravely against the evil of the Galactic Empire, never backing down despite overwhelming odds. Formed from resistance movements that arose during the Clone Wars, the Rebellion worked in secret for decades to overthrow the Emperor and restore democracy to the galaxy. Eventually, armed with the firepower of ships like the X-wing and A-wing, and the leadership of figures including Princess Leia and Admiral Ackbar, the Rebel Alliance triumphed over the Empire at the Battle of Endor.