Naga the Serpent (Japanese: 白蛇のナーガ Romaji: sāpento no nāga; also Nahga the White Serpent), formerly known as Gracia Ul Naga Saillune (Japanese: グレイシア＝ウル＝ナーガ＝セイルーン Romaji: gureishia uru nāga seirūn), is the self-proclaimed rival and companion of Lina Inverse in the Slayers Special series. Her Japanese voice actress is 川村万梨阿 'Maria Kawamura, and her English voice actress is Kelly Manison in the movies and OVAs, and Eva Kaminsky in Slayers Evolution-R.
Naga's exact age is not known, but it is assumed that she is around 19 or 20 during the time Slayers Special took place, making her several years older than Lina.
Naga's real full name is Gracia Ul Naga Saillune, making her the first daughter of Crown Prince Philionel El Di Saillune and the older sister of Amelia Wil Tesla Saillune. She has one living uncle, Christopher Wil Brogg Saillune, one deceased uncle, Randy Saillune, and a deceased cousin, Alfred Saillune. Her grandfather, Eldoran Saillune, is the king of Saillune, although Philionel acts as a proxy ruler.
Naga's mother was murdered before her own eyes several years before the start of the series by the famous assassin Booley. As a result, Naga slayed her mother's killer with the crown princess' original spell, Chaos String. After the funeral, Naga found the outrageous outfit she currently wears inside her mother's closet. Shortly afterward, she left home in order to learn the ways of the world.
Contrary to popular belief, Naga still keeps in touch with her hometown, and occasionally she will be sent money through a messenger. The people of Saillune know that she has not gone missing; they accept the fact that she has left on her own journey. 
Being a princess, Naga knows when to be graceful, and when to be self-confident. Although she keeps her true identity secret, she acts in a self-confident and sometimes arrogant manner. When she stands before other members of royalty, she speaks to them as equals, while Lina will bow her head and speak only when spoken to. Many of her confident poses and speeches are strikingly similar to those of Amelia or Martina Zoana Mel Navratilova, another princess (now queen).
Naga may be an alcoholic. She is often shown drinking to excess, especially in the Slayers movies, to the point that her cheeks are flushed, and can often be seen sleeping beside an empty mug or bottle, implying that she may drink herself to sleep.
To her dismay, Naga is often referred to as Lina's sidekick or "that other girl." Lina thinks Naga following her around is akin to goldfish poop.
Naga is very skilled in white magic; no doubt because of where she grew up. Lina is often surprised when Naga uses these spells, because Naga does not seem like the kind of person to want to heal people. However despite Lina's shock or surprise, Naga's white magic has often been a help to them. Naga also specializes in shamanistic magic, especially spells of the earth and water variety, and is slightly versed in black magic. She enjoys creating her own golems (even if they usually don't turn out very well), and one of her favorite spells to use is Freeze Arrow.
Naga is also able to terrorize people with her obnoxious laughing. She's extremely proud of her highly developed, self-confident laugh and the effect that it has on unsuspecting people. She also likes to use her body to tease or distract men who are trying to go against her.
Naga carries a large sword, but she is never seen using it, possibly because she is afraid of blood. This phobia was most likely caused by witnessing her mother's brutal slaughter. The mere sight of blood, even from a small cut, is enough to cause her to faint.
The only Slayers' character Naga really interacts with is Lina. Naga proclaims herself to be Lina's strongest and foremost rival, and this annoys Lina to no end. Nevertheless, the pair will often work together despite their differences, and when they do, they are a great team.
Although, Naga is the sister of Amelia Wil Tesla Saillune, the pair have never met in the series when both were aware of the other's identity. In the first season of Slayers, episode 17 ("Question? He's proposing to THAT girl?"), a woman with Naga's distinctive build and outfit walks in front of the disguised Amelia, Gourry, and Lina, and Amelia appears to do a double-take. In the Slayers video games, Naga meets the rest of the TV cast, but not Amelia. In Slayers Premium, Amelia was blasted off shortly before Naga's appearance. Finally, assuming that the living armor called "Nama" is in fact Naga, the two also interacted in Slayers Evolution-R, however "Nama" neither looked like Naga (being a suit of armor) nor had the memories to confirm to anyone, not even herself, what her exact identity was.
However, there were two times when they did meet; in Slayers VS Orphen. Naga was wearing a mask that hid her face, and Amelia began to ask Naga a question, but Naga interrupted and told Amelia she was a friend of Lina's; in the epilogue of the Slayers Premium CD drama, Naga makes another appearance inside a big golem, but Lina blasted off her with the Giga Slave.
There are an unusual number of copies of Naga running around the world. Ten of them are 'ordinary' copies, created by the sorcerer Diol. They are almost exactly the same as the original, minus the fact that they don't possess any of Naga's memories or magic skills.
The other copy was created by the Shadow Reflector, a magic mirror invented by Shazard Lugandy that creates clones of people with the exact opposite personality. In this case, the copy (sometimes called "Shadow Naga") is a whiny, extremely modest girl.
In Slayers EVOLUTION-R, a suit of living armor calling herself Nama appears, who bears many similarities to Naga. Although there is no explicit confirmation, it is strongly hinted in the series that Nama is in fact Naga's soul trapped in a suit of living armor, albeit without a majority of her memories. Both Nama and Naga are voiced by Maria Kawamura (although Nama's manner of speaking is noticeably different from Naga's, as Lina points out), have the same laugh, and have similar mannerisms, as well as a preference for ice based magic. Furthermore, Nama states that she was a treasure hunter who got her soul trapped in the armor as the result of touching an enchanted pot. A flashback depicting this shows Nama as a silhouette, which strongly resembles Naga. Later in the series, when Nama introduces herself to Xelloss, he makes a comment that the name Nama is very close to the woman's actual name, implying that Xelloss knows her true identity. Nama also told Amelia that her mother died when she was young and was lonely as a result; additionally, Nama became enraged and started attacking Zuuma uncontrollably when she heard that he was an assassin. Both Nama and Amelia share very similar characteristics, and in one episode, Nama mentions how Amelia is like a sister to her. In that same episode, Nama gets easily distracted by seeing a gold coin dropping out of a bandit's bag. Finally, Nama can cast Naga's original summoning spell, as well as perform the Pacifist Crush attack, which is a signature move of the Saillune royal family.
- Slayers Special novels
- Slayers Delicious novels
- Slayers VS Orphen novel
- Slayers: The Motion Picture movie
- Slayers Special OVA series
- Slayers Excellent OVA series
- Slayers Return movie
- Slayers Great movie
- Slayers Gorgeous movie
- Slayers Premium movie
- Slayers Return manga
- Slayers Special manga
- Slayers Premium manga
- Slayers Premium CD drama
- Slayers VS Orphen CD drama
- Slayers Royal game
- Slayers Royal 2 game
- Slayers Wonderful game
- Slayers SFC game
- Slayers PC98 game
- Slayers (first season), episode 17 (possible cameo)
- Slayers EVOLUTION-R, as Nama: EP01-EP06, EP13 (eyecatch), as Naga the Serpent: EP01 (flashback scene), EP13 (eyecatch)