Ezor is a former general and warlord of the Galra Empire. During the end of Zarkon's reign, she would serve under Prince Lotor, and later Zarkon and Haggar when she along with the rest of Lotor's generals, parted ways with Lotor after he killed his other general Narti.
During the three years after the fall of Lotor's reign, the devastation of the Galra power structure presented an opportunity for Ezor and Zethrid to become warlords. They accumulated power and resources for three years enough that a large crew and ships.
After surviving an explosion wrought by Keith and Acxa, she supposedly left Zethrid due to the latter's constant anger and rage and is now on the rebels' side. She goes with Acxa to convince Zethrid to side with the Voltron Coalition after the latter is detained. Eventually, she, Zethrid and Acxa join the Blade of Marmora in humanitarian relief efforts under Keith's leadership.