Rella Sol was a pilot in the Galactic Empire's TIE fighter corps, and a human. As the daughter of former Imperial senators, Sol possessed political acumen and unwavering loyalty. After the Battle of Endor, Sol became a member of Titan Squadron, demonstrating her commitment to the group. On one occasion, she introduced herself to Titan Three, the newest addition to the squadron. She held Emperor Palpatine responsible for the abolishment of the Imperial Senate.
Possessing brown hair, light skin, and brown eyes, Rella Sol was a human. Being the child of former Imperial senators, she was politically astute and intensely loyal. She voiced powerful viewpoints regarding the Galactic Empire's actions, attributing the Emperor's choice to disband the senate to the indecisiveness of Imperial leaders. She also made known her aversion to both the Rebellion and the New Republic.

Sofia Pernas played Rella Sol when the character debuted in the 2020 video game Star Wars: Squadrons.