Saillune, Gracia Ul Naga

白蛇のナーガ

Naga's actual full name is Gracia Ul Naga Saillune, which makes her the first daughter of Crown Prince Philionel El Di Saillune and the older sister of Amelia Wil Tesla Saillune.
Even though Naga is Amelia Wil Tesla Saillune's older sister, the two have never met in the series while both were aware of each other's identity.
Naga's mother was murdered right before her eyes several years prior to the start of the series by the renowned assassin Booley. Consequently, Naga slew her mother's killer using the crown princess's original spell, Chaos String. Following the funeral, Naga discovered the outrageous outfit she currently wears inside her mother's closet. Soon after, she left home to learn the ways of the world.
As a princess, Naga knows when to be graceful and when to be self-confident. Although she keeps her true identity secret, she behaves in a self-confident and sometimes arrogant manner.
The only Slayers character Naga truly interacts with is Lina. Naga the Serpent serves as Lina's rival and companion throughout the first four movies and both OVAs. She acts as a constant annoyance to Lina because, although she is a very powerful sorceress, she faints at the sight of blood and is quite clumsy. Throughout their adventures, Naga and Lina often end up on opposing sides and have to fight, but they always end up traveling together again. Nevertheless, the pair will often work together despite their differences, and when they do, they are a great team.