Theta (テータ, Tēta) is one of the five known bodyguards working for Prince Tserriednich. She is one of the 20 members of staff journeying with him to the Dark Continent. On normal duty she reports directly to Tserriednich and can give orders to the other bodyguards.
Theta has fair hair reaching to her neck and held in place by a hairband. She also has clear eyes and prominent eyelashes. As a Royal Bodyguard, she wears a black suit, a tie, and an earpiece in her left ear. After Prince Tserriednich's Guardian Spirit Beast scratches her, Theta has an adhesive bandage on her left cheek. The scratch spreads like an infection after her failed assassination of the Prince, though the next day, her face is back to normal once more.
Theta is a sagacious person, and she has confidence in her intelligence. Her prudent analysis of every option during her mission is useful in helping her team to evade unnecessary harms. When on duty, Theta displays a calm and professional demeanor although she can be humorous and pungent with her colleagues. Despite serving Tserriednich and being aware of his most nefarious character traits, she does not approve them; on the contrary, she plots to take it upon herself the dangerous task of teaching Nen to Tserriednich in order to contain his potential for evil and ultimately kill him, for which she is ready to lay down her own life.
Dark Continent Expedition arc
Prince Tserriednich contacts Theta to inquire if all she and the other bodyguards have passed the 289th Hunter Exam. Theta confirms that all five of them have passed, pleasing the prince. Prince Tserriednich then informs Theta about the Hunter Association request making it a fixed race and that the other princes have most likely caught on if they're not complete idiots. Assuring the prince, Theta claims they have many allies they can rely on, aside from the fact that if they lied or hid anything from the Hunter Association's questions they'd be rejected. They've also been advised that the association may have a lie detector device to screen them and attached personnel were briefed on the complex relationships between the princes that have been vying for the inheritance of the crown. Prince Tserriednich praises Theta for the good work she's done thus far and informs her there are no problems on his side.
Prince Tserriednich then inquires if the ones who didn't take the Hunter Exam were Benjamin and Tyson's bodyguards, to which Theta confirms it and is surprised that he figured it out all by himself. The prince easily figured it out it was them, due to their hubris and jealousy. Apparently, Benjamin has too much pride and confidence to allow his soldiers to be judged by the likes of the Hunter Association and Tyson would never let her darling soldiers outside allowing strange unknown bugs to tread upon them.
Prince Tserriednich asks if any of the other princes' bodyguards have failed the Hunter Exam. Theta answers that Luzurus' bodyguards failed it, according to a memo by the organization. Prince Tserriednich praises Theta for her good work so far and commands her to when she returns to Kakin, she resumes her normal defensive duties. Theta understands and is informed by the prince about the voyage's post-boarding defensive deployments arrangements and that the orders will all be given by him before they arrive on the ship. He also wants her to have the other bodyguards gain intel on the inner framework of the Black Whale from the blueprints they've acquired, especially escape routes, blind spots, travel time, and possibly remodeled areas.
Succession Contest arc
Roughly two hours after the ship leaves the harbor, Theta discusses the best way to handle Prince Tserriednich with Salkov, as they both believe that, following Kurapika's announcement, he will find out about Nen and try to learn it. Theta eventually decides to follow Salkov's suggestion and agrees to teach Tserriednich herself to stunt and control his growth. The two then come face to face with the prince and his Guardian Spirit Beast, which intimidates Theta. When he asks her if she knows anything about Nen beasts, she replies that she does and repeats to herself she is the only one who can keep him in check. Later, Theta watches in silence as Tserriednich brushes off one of his bodyguards, saying that he is in the middle of his Nen meditation.
Overseeing Tserriednich's Nen training, she becomes shocked by how fast he's able to learn Nen and realizes that the prince is a genius. Amidst Tserriednich's Nen training she notes how he's managed to learn Gyo in half a day. Then Tserriednich brings up that in a call patched through by Prince Zhang Lei by one of Prince Woble's bodyguards that the princes' bodyguards have been guaranteed to learn Nen in two weeks. Tserriednich then surmises that the basics of Nen can be learned in a shorter period rather than six months, which contradicts Theta's earlier statement. Theta claims she was being honest, but Tserriednich asks if the bodyguard was bluffing, to which she claims it could have been. As his Guardian Spirit Beast materializes behind Theta and walks to her, Tserriednich in a cold fury demands to know which one of them is lying and whether or not he should end her on the spot. Theta admits that there is a way to learn Nen far more quickly, but that way is far too risky and the repercussions could be serious, so her method is the fastest and the most correct. Tserriednich, still unconvinced by Theta's answer, coldly tells her that the thing he hated the most in the world is a lying "bitch" and then asks her whether he can trust her, to which she expressionlessly answers yes. Tserriednich's Guardian Spirit Beast appears beside her and scratches her cheek with its barbed tongue.
When, two days pass, Danjin makes his report to the prince, Theta is frightened by Tserriednich's ability to formulate hypotheses concerning Nen better than she can. She reassures herself that she still has 11 days to teach him Zetsu before Kurapika's lessons are over. When the Fourth Prince asks her to take the water divination test, Theta protests while thinking to herself that discovering his Nen type early will give her more time to work on countermeasures. The ominous manifestation of the prince's Hatsu reveals he is a Specialist with an extremely sinister nature.
Theta continues to train Tserriednich, introducing him to advanced Ten and Ren exercises. By Saturday, he summons a Nen beast without his own awareness, which prompts Theta to act at the first opportunity. She thus decides to accelerate Tserriednich's training, declaring that she has finally accepted that she should not slow down his progress, but tailor the pace to his. She urges him to try Zetsu. His Guardian Spirit Beast confronts her, but Theta remains unwavering, since she did not lie. Tserriednich begins practicing the technique and his bodyguard thinks that she can still act by the following day.
On Sunday evening, Theta has Tserriednich maintain a full-body Zetsu for one hour while she attempts to break his focus. After two tries, she notices the prince becoming serious and tests him with her own aura. She waits almost until 21:00 to make sure the Guardian Spirit Beast has no aura left, then pulls out her gun. She expresses regret that someone as talented as Tserriednich would not use Nen for good and she steels her resolve to commit suicide after shooting him. Right after she opens fire, seemingly killing the prince, she falls under the spell of Melody's music. After three minutes she returns to her senses, but Tserriednich's body and blood are nowhere to be found. The other guards burst into the room, and the prince is revealed to be still alive and ostensibly unaware of her attack, claiming that the gunshot was part of their training. Suddenly, Theta buckles to her knees as Tserriednich's Guardian Spirit Beast appears and warns her that the next time she lies to one of the prince's questions, she will cease to be human. She passes out and is taken to her room.
She comes to with a start less than 15 minutes later, an infection-like sore spreading from the wound on her cheek. Salkov concludes that the Guardian Spirit Beast leaves liars alive so that they can become its pawns and proclaims that he will take over, asking her how to do so. After Salkov examines the room and reports that he was unable to find traces of blood, Theta concludes that the prince's death was an illusion he showed her and decides to take some time to figure out where exactly it started and ended.
Handgun: Theta carries a handgun of unknown model and caliber strapped to the small of her back.
Abilities & Powers
Theta appears to enjoy some degree of authority among Tserriednich's bodyguards, since she reports directly to him, and the prince holds her abilities in high regard. As a Provisional Hunter, she has all the benefits granted by her status as a Hunter. However, these are all temporary, and her Hunter status and license will expire after the voyage to the New Continent. She has good control over her emotions, remaining impassible when suddenly faced by Tserriednich's sinister Guardian Spirit Beast. According to her, however, his ability to consider multiple scenarios exceeds her own.
Theta is able to see aura and use Nen. She is also capable of mentoring others. Her theoretical knowledge encompasses the Four Major Principles and at least some advanced techniques. She has shown the ability to use Ren and Hatsu, the latter by emitting a weak aura projectile.
- "Evil will bring about evil Nen... If another prince learns Nen first and attacks Prince Tserried, who will awaken to Nen... If that's how he acquires Nen... just the thought sends a chill up my spine. I'm the only one who can put a stop to it...!!"
- "I was naive. This is a man who should never... ever... acquire Nen...!! I have to do this. I'm the only one who can...!!"
- Her name is equal to the eighth letter (Θ, ϴ, θ, or ϑ) of the Greek alphabet—theta. In the Greek numerals system it has the value 9.
- In Athens, the theta was used as an abbreviation for "θάνατος" (thanatos) meaning "death".
- The adhesive bandage she wears in Chapter 376 is missing in the last page. This error was fixed in the volume release.
Translations around the World