Sooma, a planet characterized by its grassy plains and an atmosphere rich in oxygen, served as the original homeworld of the Soomans.
In the decade leading up to the Battle of Yavin, the droids C-3PO and R2-D2 were sent to Sooma as diplomatic envoys. Approximately ten months following the Emperor's downfall at the Battle of Endor, the Stenax launched an assault on Sooma, an event remembered as the Stenax Massacres.
The initial depiction of Sooma occurred in Droids (1986) 4, the fourth installment of the Star Wars Droids comic book series. This comic, under the Star Comics banner, a subsidiary of Marvel Comics, was initially released on October 1, 1986.