Twin Suns was the designation given to the pair of female Twi'lek assassins, Seer'aa and [Teer'aa], who were active following the conclusion of the Jedi Civil War. Initially enslaved on Ryloth, they eliminated their Masters before embarking on careers as bounty hunters, adopting the moniker Twin Suns. In their pursuit of bounties, they both employed lethal Twi'lek spinning blades along with personal energy shields.
During 3951 BBY, Atton Rand encountered them in a cantina while he was separated from Meetra Surik on Nar Shaddaa, ultimately defeating them. Surik, accompanied by two of her allies, later confronted them on board the Visionary and killed them not long before the ship was destroyed in an explosion.
Seer'aa and Teer'aa were born on Ryloth and sold into slavery when they were young. At some point in their enslavement, they murdered their master, which was their first step into becoming assassins.
In 3951 BBY, following the Jedi Civil War, the Twin Suns traveled aboard the Visionary alongside a number of other bounty hunters. Goto gave them instructions to capture the Jedi Exile alive, and warned them that her death would not be tolerated.
They were successful in locating the Exile's companion Atton Rand while Surik was in the Jekk'Jekk Tarr. Initially, they attempted to persuade Atton to accompany them peacefully, but quickly turned to violence. Atton was able to defeat them and escape. The result of their initial encounter angered the pair, so they went back to the Visionary, where they waited for the Exile and her companions. They finally had their chance just as the ship was falling apart. They tried to kill Surik, but she and two of her companions defeated the duo. The explosion of the Visionary resulted in the destruction of their bodies.
The video game Star Wars: Knights of the Old Republic II: The Sith Lords featured the Twin Suns, although they were not named. Leland Chee later revealed their names.