Xellos tends to behave like a playful trickster, answering nearly all questions directed toward him with "Sore wa himitsu desu," literally "That is a secret." He seems to delight in the frustration that ensues with his withholding of information. For the majority of the second season, Xellos acts simply for comedy's sake frequently breaking the fourth wall and addressing the viewers; all the while subtly and even sinisterly advancing the plot. Generally, Xellos' mood can be determined by the state of his eyes. If they are closed, he is acting as the "Trickster Priest," but when he opens them he brings forth the Mazoku. However, on occasion he opens his eyes out of mere surprise (as in the fourth episode of NEXT, when Lina reveals her knowledge of the Pledge Stone).

Xellos' true intentions always seem to be a mystery. As a mazoku his main goal is to return the universe into the nothingness of the Sea of Chaos, but near the end of the series he aids Lina and the others in saving the world instead. Even though he tends to manipulate Lina and the others he has saved their lives on few occasions, such as saving Martina Zoana Mel Navratilova from bandits for no apparent reason, and saving Filia during their battle with Valgaav. The reasons for doing so are never given which leads Xellos to be one of the many enigmas of the series.

Xellos is extremely loyal to Zelas Metallium and usually acts only if ordered (although at times he has aided Lina's group without having been ordered by Zelas), and it is assumed that he would gladly follow any of her requests in order to keep her pleased, even if he is not pleased with them himself (an example of this is when he was ordered to offer to kill Lina Inverse if ValGaav joined the Mazoku side in TRY).

In the novels, the Slayers group generally abhors his presence, while in the anime he is treated as more of a tolerable nuisance.  In the anime, Xellos and Lina seem to have a sort of mutual respect for each other. He seems to enjoy the chaos that follows Lina, and follows her for the sake of fun even if he is not ordered to do so. In the novels Xellos seems to be more distant around her, looking somewhat troubled by the fact that Lina, unlike other humans he has dealt with, is able to see the bigger picture of things and is not tricked so easily.

Zelgadis holds a powerful hatred towards the Mazoku because in the 2nd episode of NEXT, he had destroyed a Claire Bible manuscript which, the chimera thought, might have contained the cure to his appearance. This naturally does not bother Xellos one bit, even though he is the only one who does not tease Zelgadis about his appearance.  When Amelia makes one of her heroic, "justice filled" speeches Xellos listens with amusement and mild curiosity, although they do tend to disturb him at times. When she makes endless comments about how beautiful and wondrous the world and life are Xellos becomes extremely weakened, and even cringes at her minor comments. So great is the effect of these speeches on Xellos that, when forced to fight him, the group has even used one of them as a weapon to render Xellos helpless.

Filia is the only being capable of annoying Xellos. Even though he tries to be polite to her, she continues to insult him and call him names like Raw Garbage (namagomi). Xellos likes to tease Filia by the fact that she is part of the dragon race, he makes comments like " Those of the Dragon Race would rather use violence than trying to compromise", or anything along those lines. Xellos seems to have a personal enjoyment of not only making fun of her, but he seems to like tricking her the most. Her hatred towards him comes from the fact that he killed many dragons during the Kõma Wars (War of the Monsters Fall) 1000 years ago. By the end of the series, they learn to tolerate each other and are capable of having at least one decent conversation.

Xellos is widely considered to be the most powerful Mazoku under the five lords. As such he is nearly immune to all Black Magic, only the spells that call upon Shabranigdo or the Lords can even faze him; however, he is vulnerable to spells that use the power of the Lord of Nightmares, though given his speed it is unlikely that he would allow someone to cast the spell against him.

Immensely powerful, Xellos is capable of annihilating nearly anything using his own power. This is best shown by his destruction of an entire clan of Golden Dragons. However, he tends to underestimate his opponents, leading to himself getting beaten severely by ValGaav.  Like all Mazoku, Xellos can teleport anywhere he can imagine by phasing to and from the Astral Side.

"Additional information about myself: There is much more to me than just how you see me in Slayers... of course it is a SECRET!"

Let the forces of evil tremble in fear (along with wealthy merchants and innocent bystanders)... THE SLAYERS ARE BACK! Join the not-so-heroic adventures of Lina Inverse--the super-cute sorceress who steals from the rich and keeps it for herself! Along with her sword-swinging (but dumber than dirt) sidekick, Gourry, her hyper-enthusiastic protégé, Amelia, and the tormented and overly-serious golem, Zelgadis, there's nothing Lina can't do! 
 
(Source: Software Sculptors)

Awards: 
- Most popular voice actor in the Animage Anime Grand Prix (2004)
- Best Supporting Actor at the 1st Seiyuu Awards (2007)

**Non anime roles:**

- Kamisato Ayato - Genshin Impact (Video Game)
- Otto Apocalypse - Honkai Impact 3rd (Video Game)
- Clotted Cream Cookie - Cookie Run: Kingdom (Video Game)
- Phantom - Arknights (Video Game)
- Tatsulot - Kamen Rider Kiva (Tokusatsu series)
- Luocha - Honkai: Star Rail (Video Game)

Wendel Luís Bezerra da Silva is a Brazilian actor, voice actor, dubbing director, announcer and YouTuber, in the field since he was eight years old. He also directs the dubbing of series and movies. He has four brothers, two of whom also pursue a career as a voice actor, Ulisses and Úrsula Bezerra.

David Moo is a voice actor who works on the properties of 4Kids Entertainment and Central Park Media. He eventually quit voice acting to work as a mixologist and bar owner.

In search of fame, fortune, and foreign food, Lina Inverse sets sail on a collision course for the new world! What she finds there are vengeful enemies, a bunch of high-and-mighty dragon lords, and a new quest to save the world from destruction. What’s a girl gotta do for a little vacation? 
 
(Source: Software Sculptors)

Having lost the Sword of Light in the previous battle, Lina and Gourry continue their journey in search of a replacement weapon. On the way, the two of them meet up with Amelia and Zelgadis in the kingdom of Luvinagard while taunting some pirates. Lina is happy to reunite with her old friends, but appearing before her is Luvinagard's Inspector of the Special Investigative Unit; a man called Wizer. However, Lina is amazed at his unusual behavior... 
(Source: Anime News Network)

Michael Tremain Sinterniklaas is a French-American voice actor, ADR director and script writer who has provided voices for a number of English language versions of Japanese anime films and television series, as well as cartoons and video games. He has worked for Studiopolis, Funimation, 4K Media, Central Park Media, Bandai Entertainment, Viz Media and Media Blasters. He is the founder and owner of NYAV Post, a Bi-coastal studio located in New York City and Los Angeles, which dubbed many different anime titles and recorded several original prelay works.

(Source: Wikipedia)

To find a way in rescuing Pokota's country Taforashia which was sealed by Rezo, Lina and her group are in search for the Hellmaster's jar in what the Red Priest placed his soul after death. Zelgadis is willing to do anything to get the jar for changing back into a human while Zuuma is plotting on revenge and accomplishing assignment in killing Lina Inverse. Still a big mystery for her and the others is what Xellos is aiming for in this battle. 
(Source: Anime News Network)

Lina and Gourry travel to a seaside town named Acassi, where octopus tentacle is a delicacy. However, the octopus meat carries a curse that dooms the eater to only speak Takogo (octopus language). Amelia, Zelgadiss, and Xelloss all show up, and the main four characters (Lina, Gourry, Ameria, Zelgadiss) get cursed. The octopi enlist the power of a mazoku to get rid of the humans once and for all. The white sorceress Ruma must learn the cure to the curse from her long-lost master in order to save the town. 
(Source: Anime News Network)

Lina Inverse, a wandering sorceress and bandit-killer, joins forces with roving swordsman Gourry Gabriev in what's supposed to be a quick union of convenience. 
 
Note: This is the main Slayers manga, adapted from the Slayers novels vol.1-8. The fourth volume is adapted from the Slayers Return movie.

After the defeat of Zanaffar, Lina, Gourry, Zelgadis, Amelia, and Pocota, the prince of Taforasia, continue their hunt for Rezo&rsquo;s urn, each with their own motivations for doing so. Pocota to revive his people from Rezo&rsquo;s well-intentioned sleeping spell, and Zelgadis to regain his former body. However, something deeper is circling around the intrigue behind Rezo&rsquo;s urn, and all will come to a head in the bustling city of Vezendi&hellip;


Lina and her friends are back! Enter a new creature that holds mysterious powers and the gang who are reunited to go out on another journey again!


After being shipwrecked on a remote southern island, Lina and Co. protect its townspeople from an attack by pirates&hellip;. But the island holds a deep, dark secret - and powerful magical forces are at work trying desperately to hide its past. The fate of the world once again rests in the hands of the over-bearing Lina Inverse&hellip; For better or worse! 
(Source: Turtle Paradise)

In the distant future, mankind has advanced into an age of technological supremacy, where magic is a lost art only mentioned in fairy tales and nursery rhymes. Living in such a world is Light Inverse, a youth who dreams of sorcery&hellip;. but suddenly, his home is attacked by mazoku! With modern weaponry proven to be ineffective against the monsters, all hope seems to be lost&hellip;. Until Lina Inverse and Gourry Gabriev are suddenly transported to the future from a mysterious shrine in their time. Can Lina bring magic back to this land&hellip;!?