Assassin (Fate/Crossover - Killua Zoldyck)

Assassin (アサシン, *Asashin*) is the servant of ??? in the ??? Holy Grail War.

"Electricity doesn't hurt me. When I said it doesn't hurt me, it means I can bare it. None the less, I feel the pain. That's why I'm a bit annoyed..." - Killua Zoldyck

## Profile

### Identity

Assassin's true identity is Killua Zoldyck, the third child of Silva and Kikyo Zoldyck and the heir of the Zoldyck Family, until he runs away from home and becomes a Rookie Hunter. He is the best friend of Gon Freecss, and is currently traveling with Alluka Zoldyck.

### Personality

Initially, Killua is introduced as a character who appears similar to Gon: cheeky, cheerful, and full of mischievous ideas. However, contrasting Gon's politeness, Killua can be quite rude to others, mostly strangers and older people. He is most commonly known for having a sweet tooth; he loves everything sweet and spent almost 200 million on snacks when he was at the Heavens Arena. His favorite snack is chocolate, specifically Chocolate Balls.

He is also one of the quickest-thinking characters and often analyzes a situation with great ease and accuracy. In spite of his young age, his way of thinking, knowledge, and pragmatism give him the attitude of an adult. He is initially very confident about his own abilities, going as far as questioning Gon's capability during the Hunter Exam, and compares his strength with other people. As time passed, Killua became humble about it and no longer touts his own abilities. Despite his advanced knowledge and level-headed nature, he is not very open in general and will become very embarrassed when Gon openly calls him his best friend or compliments him about their bond.

Despite his horrendous upbringings and the torturous training his family has put him under, Killua has managed to remain generally positive and does not seem too psychologically affected by the pain he's endured, demonstrating a noble, pure side of him. When showcasing his abilities and turning his Nen into electricity, both Netero and Biscuit have noted how truly tragic his childhood must have been, with the former stating that it's a miracle Killua is even able to smile at all.

However, his ruthlessness and aptitude in killing show the other side of him—deadly, violent, and bloodthirsty. This side fades as he spends more time with Gon, although he is still unafraid to threaten or kill anyone who attacks him or Gon. Conflicting with Killua's predisposal to kill is his unyielding loyalty to his friends and natural kindness. He claims Gon was his first friend, and he grows progressively more attached to him as time passes. Killua often suffers immensely in his attempts to help his friends without a single complaint. He puts others before himself without being concerned about his own health or even his life.

Until recently, Killua's greatest flaw was his fear of those seemingly more powerful than him (one of whom being his elder brother, Illumi). Killua had been trained as an assassin by his brother to be extremely cautious and to only engages in combat provided that victory is absolutely certain. This impeded him as a Hunter, as Biscuit stated more than once that victory is never certain, and that depending on the circumstances, a person has the potential to defeat a stronger opponent.

Killua especially struggles with these dueling ideologies during the latter half of the series, as he begins to encounter stronger opponents. His brother's teachings remained firmly entrenched in his mind, to a point at which Biscuit prophesied that he would one day abandon Gon because of this. Finally, he had to face Biscuit's prophecy when he encountered a Chimera Ant while Gon (who could not use Nen at the time) was not far off and had no way to defend himself. At the last moment, Killua realized that Illumi had implanted a needle in his brain way back in the first Hunter Exam. This needle was responsible for forcing Killua to retreat and jailing himself in his comfort zone whenever any situation would potentially endanger his life. Upon extracting the needle, Killua was freed from this restraint and gained full control of his subconscious to make his own decision whether or not to flee whenever there is a need to fight stronger opponents.

During the events of Greed Island, Killua has shown to be highly susceptible to gambling. Going as far as to be willing to gamble with his life to get a big reward in the slot machine and seem to show heavy gambling rush in his eyes causing Biscuit to neck chop him to make him stop.

A stark contrast to his best friend Gon, Killua is highly mature in both thinking and emotion in which he can keep his anger in check and maintain rationality better than Gon even when facing a terrifying experience like the death of Kite, while Gon gives in to his rage and loses his logical thinking.

## Abilities

Killua has all the benefits granted by his status as a Hunter. Furthermore, as a member of the Zoldyck Family, he has vast wealth at his disposal, although he needs his father's or his grandfather's permission to use them. His family name alone is enough to scare the ones that know what it is associated to. Killua has been trained since birth to become a human weapon and is recognized by his family to be the most talented assassin in the entire history of the Zoldycks. When he took the Hunter Exam the first time, he was the fourth most powerful applicant (after Gittarackur, and, by his own admission, Hisoka and Hanzo, although the latter was without entering his "assassin mode"), and the one that Satotz believed would pass. Up until the Hunter Exam, he did not hesitate a second to kill, but after meeting Gon, this tendency subsided; still, he is not afraid to resort to extreme means when circumstances demand it. Like his friend Gon, Killua has an astounding natural talent that enables him to learn at a fast rate and allegedly ad infinitum, a characteristic that piqued Hisoka's interest. His potential extends to Nen as well, as noted by Wing and Bisky. Although he primarily fights with his bare hands, Killua is able to use any kind of weapons, but the only one he employs consistently are his custom-made yo-yos. When he tried to prevent the Selection, he was so confident in his strength that he claimed that tanks and fighter jets would be useless against him, and in fact, he was able to effortlessly subdue a military unit comprised of at least four tanks.

His training endowed him with near immunity to poison, high tolerance to electricity, great agility and physical strength, advanced armed and unarmed combat and stealth techniques, which he acquired at a very young age. He can also drive cars and airships. His intellect and exceptional analytical skills are equally remarkable, and it is often through a strategy that he can defeat opponents who are stronger or more experienced than him. He is also able to walk without making a sound and sleep with a larger part of his brain awake than normal, so he can avoid attacks even in his sleep, even if they come from an armed, albeit weaker, fellow Hunter.[184] After leaving Greed Island, due to his prowess in Nen, Killua became able to blend with nature more easily, which allowed him to find multiple new species of animals at a rate that astounded Kite's companions.

Killua's main weakness used to be an inferiority complex that paralyzed him with fear and prevented him from fighting opponents that could pose a threat to him, even if their overall strength was lower than his own. Although it was originally believed to be a product of his training, it is later revealed that it was actually due to a Nen-imbued needle that Illumi had implanted in his brain. Its removal caused Killua to snap free of his brother's conditioning, thus regaining the full control of his mental capabilities in battle. This also had the effect of making his overall movements better, increasing his speed.

Killua is also immune to electricity, thanks to his own Nen. He can also sharpen his fingernails into claws that are sharper than a knife.

Killua can enter a state of heightened concentration in which he focuses fully on killing the enemy, preventing himself from hesitating. According to him, there is a sensible difference between his power in this state and with his normal mindset.

### Noble Phantasm

#### **Whirlwind**

The first core function of Godspeed has Killua react automatically to external stimuli.
Instead of the normal process of the stimulus being perceived by the nerves, which transmit a signal to the brain which in turn sends an instruction to the muscles, Killua programs his aura to send an electric signal to his muscles so as to instantly react to a threat, bypassing the comparatively slow nervous system. The aura can be preprogrammed to respond to different stimuli: physical contact, malevolent intent in enemy aura, or someone stepping in a predetermined perimeter, and the specific response is preprogrammed as well.
Concretely, this results in a drastic boost to Killua's reaction time, which has both offensive and defensive uses. When Killua used a prototype of this ability, he was able to grab a dart between the instant it was conjured, already in contact with his skin, and the moment it punctured it. Whirlwind is also effective as an offensive ability. If the opponent executes the action Killua has preprogrammed a response for, he will, in most cases, be able to land an attack before they can, thanks to both his reaction and his movement speed being drastically enhanced. When he used this application of Godspeed against Menthuthuyoupi, Killua was able to momentarily disappear from his sight, and struck him several times without the latter being able to do anything, the short lapse between the Royal Guard's aura surging and him taking any action being enough for Killua to preempt any move his adversary could make. Youpi himself admitted to being completely powerless throughout the beating. On that occasion, despite his attacks inflicting no damage at all, Killua's electricity proved powerful enough to elicit screams of pain out of Youpi, as well as to paralyze him for a few instants. When he later used the same ability against Shaiapouf's clone, which is considerably swift in its own right, Killua was able to dodge its attacks with Komugi on his back, leading Pouf to fear that even with all his cells, he would have a hard time catching him, and then burn off its cells by generating an electric current between his fingers whenever it stepped into a circle he had drawn.

Since giving an order to one's aura is generally a Manipulation skill, it is possible, albeit unconfirmed, that Whirlwind makes use of this Nen category.

#### **Speed of Lightning**

The second application of Godspeed allows Killua to retain conscious control of his movements. His running speed and jumping ability increase dramatically, hence why he uses it primarily to cover long distances in a very short amount of time. As a consequence, this core function is more affected than Whirlwind by the terrain: Tsubone was able to keep Killua in sight while he was running through the woods, but was shaken off as soon as he reached a paved road. However, even at full throttle, he was severely outsped by Tsubone's motorcycle transformation while she had two riders. The butler estimated that by crossing the woods, it would take Killua 10 minutes to reach a destination about 40km (approx. 24.8 mi.) away, whereas a car driver would take twice as long. This suggests that on unfavorable terrain, Killua's speed with Speed of Lightning is approximately 240km/h (about 149.1 mph). If he carries someone, they will suffer mild electric shocks as long as they are in contact with him.

## References

https://hunterxhunter.fandom.com/wiki/Killua\_Zoldyck

https://hunter-x-hunter-fanon.fandom.com/wiki/Killua\_Zoldyck

https://characterprofile.fandom.com/wiki/Killua\_Zoldyck#Killua%20Zoldyck

https://vsbattles.fandom.com/wiki/Killua\_Zoldyck