Imroosians were a sentient species originating from the volcanic planet of Imroosia, situated within the galaxy. These beings existed during the time of the High Republic Era, where one Imroosian, Archivist Ru-Ru, worked for the Jedi Order at their temple located on Banchii. In addition, Margo, an Imroosian, functioned as Dryden Vos' concierge on his yacht, known as the First Light. Furthermore, Agira, a youthful Imroosian, fulfilled the role of handmaiden to Princess Leia within the House of Organa.
Imroosians evolved a distinct flinty, chalk-like skin as an adaptation to the intense heat of their environment.
The design of the Imroosians was based on previously unused concept art for Qi'ra, from when the initial plan was for her to be an alien species.