Marinda, a humanoid being, served as a member of the Knights of Ren. This group, devoted to the dark side, was under the leadership of Ren, who possessed Force-sensitive abilities. In the era of the Galactic Empire, Marinda, along with her fellow Knights of Ren, allied themselves with Crimson Dawn. This criminal organization was governed by Lady Qi'ra. As part of Qi'ra's scheme to eliminate the Sith Lords Darth Sidious and Darth Vader, the Knights were assigned a mission by Qi'ra: to steal a particular object from Fortress Vader.