Kyoya Hibari (雲雀 恭弥, Hibari Kyōya) is the leader of the Namimori Middle Discipline Committee, a group of delinquents who are all loyal to Hibari. He is a violent delinquent who uses his status to harass other students. As shown several times in the series, he prefers to be alone and cares little for his subordinates. He loves Namimori more than anything and will often say "I'll bite you to death," or "kamikorosu," to those that disturb Namimori Middle School. Hibari is very proud of his school and is apparently the only person who likes their school's anthem, even using it as his ringtone. In the Kokuyo Arc, he adopts the Kokuyo Assassin Birds' bird. The bird (subsequently nicknamed "Hibird" due to its connection to Hibari) becomes attached to Hibari. Hibird can also sing the school's anthem as Hibari loves it. Reborn piqued Hibari's curiosity early on in the series and Hibari considers him a worthy opponent, having a strong urge to fight him.
As stated by others, Hibari is a very scary character with no care in the well beings of others, preferring to do whatever it takes to get what he wants. This often leads his opponents to surprise him, as he doesn't think before attacking. As the head of Namimori Middle's Discilpline Committee, Hibari uses authority to assault those that get on his nerves, including his own subordinates.
A rare trait about him is his love for small animals, ranging from birds to hedgehogs. He is also fiercely loyal to his school and its rules, going so far as to punish others for breaking them even if they aren't students or at the school, such as Genkishi.
He is shown to dislike being indebt to anyone and strives to pay them back as soon as possible. Also, earlier in the series he is also shown to have a soft spot for I-Pin, having accepted her Valentines day chocolates with a smile and not taking money from Tsuna at a festival upon seeing I-Pin worried.
Future Hibari is shown to be more calm and observant about his opponents, and outwardly admits to hating illusionists because of his grudge towards Mukuro, the first person to have defeated him. His desire to be alone and attack people that annoy him still remains, though his actions are shown with more thought. Future Hibari is also seen being more respectful to Future Tsuna, showing that he has accepted him as his boss (as seen in one of the flashbacks of Irie Shoichi).
As stated by others, Hibari Kyoya (in terms of personality) resembles the first generation cloud guardian, Alaude.
Hibari beat Tsuna, Gokudera, and Yamamoto up for using his office as their new base. Reborn saved them from him and as such Hibari gained interest in fighting him. Later, Dr. Shamal gave Hibari the sakura-kura virus so that Tsuna's Family could view the sakura in peace.
Reborn is the baby Home Tutor of Tsunayoshi Sawada and the world's strongest hitman. Whenever he greets someone, he says "Ciaossu," a casual male greeting of Japanese and Italian that combines Ciao and Ossu. He wears a black fedora with a thick orange stripe running across the sides of the cone. He has black eyes and wears an all-black suit with black boots and a red long sleeved polo with a blue necktie underneath. His Adult size form however, wears a yellow long sleeved polo. He is always seen with his pet chameleon Leon on the brim of his hat, along with his Yellow Arcobaleno Pacifier. Reborn's Dying Will Flame is of the Sun Attribute. Out of all the Arcobaleno, he is the strongest. It was revealed in a flashback that Reborn initially showed anger towards the Arcobaleno curse; however, after a period of exile, he came to accept it, asking Shamal to "erase" his old self. As an Arcobaleno, he remains fairly calm through any situation, even in his "fights" against Colonnello. He did, however, admit to have snapped when Timoteo was revealed to be in Gola Mosca.
Reborn mostly takes a mentoring back seat in the Arcs, rather than the direct fighting; however, he can be credited with helping his pupils achieve much higher levels and gain new, more powerful attacks.
Before he learns of the seriousness of the attacks, Reborn, along with Nana encourages Tsuna to learn how to defend himself. But when he and Tsuna visit the hospital after Ryohei falls prey to the attacks, he discovers the watch. When Leon's tail falls off, the severity hits him. He reads Tsuna the letter he received from the Ninth, and opts to gather a group to do battle with Mukuro's Gang.
Bianchi, Takeshi, and Hayato joins Reborn and Tsuna as they begin their offensive. During Takeshi's bout with Ken, he kicks Tsuna into the Botanical Dome because he expressed concern over Takeshi. He helps the two out of the hole after Takeshi wins the fight, and accompanies the group to a rest area, where he sleeps through the encounters with M.M. and Birds. When Reborn awakens, Tsuna runs off to go and pursue Fuuta, and the rest of the group stays behind to take on the next killer, who turns out to be the Fake Mukuro. When Gokudera is temporarily incapacitated by Shamal's Trident Mosquito side effects, he watches as Takeshi takes on the Fake Mukuro. He and Takeshi simultaneously figure out and reveal the trick of the Steel Serpent Ball. But, it wasn't enough for his future pupil to win. As Bianchi steps to the plate to fight next, and is nearly pulverized, Reborn shoots Tsuna with the final Dying Will Bullet just before he catches the weapon. Reborn looks on as Tsuna takes the win, and as Lanchia reveals that Mukuro is really still up ahead.
Reborn is forced to condone leaving Gokudera behind to take on Chikusa and supplies Tsuna with the whip Dino gave him. He mainly observes as Tsuna frees Fuuta from possession and gains his new X-Gloves to battle with Mukuro, only intervening when Tsuna panics in the midst of the fight, and he has to talk some sense into him.
Reborn, during the down time between Ring Battles, trains Tsuna on how to use the Dying Will Zero Point Breakthrough in order to take on and defeat Xanxus. However, when Hibari returns from training after Hayato's Storm Ring Battle, to bite everyone-Varia and Tsuna's Family- to death, Reborn placates him by promising that he may be able to battle Mukuro again, which greatly pleases Hibari. For the remainder of the Arc, Reborn has a mainly static role of training and commenting. He lastly shoots Tsuna at the start of the fight when Xanxus tries to gain a cheap shot before the match starts, and watches as his Family proves victorious in the Sky Battle.
Reborn is the first to be transported to the Future and trapped there. It is not yet revealed how he found his way to the Vongola Headquarters, but he is next seen greeting Tsuna and Gokudera as they arrive there with Lal Mirch, though he has to wear a special suit to keep from being killed by the anti Tri-ni-set radiation that Byakuran is pumping into the atmosphere. The anti Tri-ni-set radiation affects the Arcobaleno severely, paralyzing their movement and killing them slowly, but it does not seem to have an effect on normal people. Reborn reveals to Tsuna that he needs to gather all seven of his guardians to do battle with Byakuran's forces. Reborn doesn't venture out of the base at all during this plotline due to the radiation. He does, however, help Tsuna with his training after he returns with Kyoko, Haru, I-Pin, Lambo, and the Yamamoto from 10 years ago by getting Tsuna to realize what his true goals are, which were to "protect everybody," not "to return to the past."
Reborn appears after Tsuna is captured by Spanner as a hologram projected by Tsuna's headphones and witness to Spanner instructing Tsuna on how to use the contacts to perfect his X-Burner. He remains with Tsuna for the rest of the invasion, and gets Giannini to program a holographic distraction during Tsuna's fight with Genkishi. When Shoichi Irie reveals that he is an ally of the Vongola, Reborn believes him, mostly because he answered the questions that Reborn had being thinking about since he was sent to the Future.
As Tsuna and his Family are sent back to the past, Reborn tells them the few Abilities and characteristics of the Arcobaleno. He also remembers that the current Sky Arcobaleno is missing, which may become a predicament for Tsuna in the Future Trials. He also reminded Tsuna that he is also an Arcobaleno, in which he says that he would not hold back during the Trial. Tsuna defeated by Reborn
During Reborn's Arcobaleno Trial, he informs Tsuna that his Trial was a seven-on-one, all-out battle with him, and that all six of the Guardians, including Lambo, were to participate. He knocks out Tsuna and takes down Hibari, Chrome, Ryohei, Gokudera, and Yamamoto. When Tsuna finally comes to, the sleeping Lambo is the only one who was in a good condition. Reborn giving Tsuna his 7th and last seal
Tsuna at first does not want to fight Reborn, but Reborn tells him that he's still "too soft" and that his fallen comrades are his responsibility. Tsuna finally accepts this and enters Hyper Dying Will Mode and fights Reborn. Reborn allowed himself to be beaten into a wall but Tsuna stops as he is about to use his X-Burner and gets shot down by Reborn's Chaos Shot, who said "I cannot pass a person not fit to be Boss." He gets captured by Verde, along with all the other Arcobaleno besides Aria, using a variation of anti Tri-Ni-Set waves, which only paralyzes them, as opposed to outright killing them. After Verde's trial, he was asked for a second chance at his trial by Tsuna, but he said that it wasn't necessary. He states that they completed it in their fight with Verde.
To prepare for "Choice," the war game that Byakuran is making the Vongola Guardians play, Reborn asks Shoichi to explain the rules. While he finds the game tasteless, he has great faith that the technicians will come up with solutions for the problems they will be facing. One of their solutions was to make the Guardians ride Motorbikes for extra mobility. When explaining to Tsuna how to ride, he instructs Tsuna to pop the clutch without Tsuna realizing that it was wrong. Reborn's reasoning is that Tsuna should get the worst parts over first that is his tutoring method.
When Dino arrives at the Vongola Headquarters and assigns the Guardians their tutors, Reborn assumes the role of "Tutor Fairy," mostly likely only so he can discipline Dino if he makes any mistakes.
Reborn is present during Yamamoto and Hibari joining the group in the moments before Choice begins. He sees them all unleash their Vongola Boxes and generate twice the amount of FVs needed to transport them- a whopping 10 million. He is engulfed in a beam of light along with everyone else present.
He wakes up in the Lightning Field that Tsuna selected, and listens as Byakuran explains the rules of Choice more clearly. Reborn, along with the rest of those chosen to sit out of the first battle, relocate to the Vongola Audience Stalls to watch the battle of Tsuna, Gokudera, Yamamoto, Shoichi, and Spanner for the Vongola versus Kikyo, Saru, Torikabuto, and Daisy for the Millefiore under the Target Rule.
Later, he protects Yuni from Byakuran by shooting him, saying that if he lays a finger on the leader of the Arcobaleno Boss, he won't sit there and watch.
Seeing that Tsuna and the others need to become stronger, Reborn arranges to have them sent back to the past. While in the past, Reborn gathers the other Arcobaleno to train Tsuna and his friends. He is also the one who explains to them that they will be tested by Vongola Primo's Guardian. Reborn will train Ryohei, as they both have Sun Flames.
Reborn begins to stay to Ryohei's and Kyoko's house as being Ryohei's temporary tutor.
Reborn was an audience to Yamamoto's trial.
It was stated by Reborn that because Lampo hid inside a castle inside the amusement park and the only objective was for Lambo to acquire three stamps and go to him, it shows his obvious distaste for Lambo and the fact that he had not prepared beforehand. He goes to the amusement park with Lambo, Tsuna, Gokudera, and Yamamoto. Verde finally shows up himself, after sending all sorts of tests on Lambo and defeated by Lambo's Elettrico Cuoio. Reborn chides the defeated Verde and tells him that he is a tutor and should not do this to his student.
During Gokudera's trial, Reborn is seen sitting on Namamori School roof top discussing with Fon, Collonello and Skull on their counterpart students. Skull tries to brag about him and Hibari, but the rest of the Arcobaleno there ignores him. As Skull repeats his sentence many more times, Reborn calmy took Skull and threw him off.
During Hibari's and Ryohei's trial, Reborn tricks Skull into taking action on Hibari. When Skull tries to attack the school, he tells Tsuna, Gokudera and Yamamoto not to interfere with Hibari and Ryohei arguing and later, defending the school. Eventually, Reborn told Yamamoto to tell the first-year base ballers to evacuate from the school.
After arriving back with the rest of the gang from the past, Reborn tells Tsuna that they do not have much time before the Real Six Funeral Wreaths appears from the teleportation system. Soon after Giannini gets the alert that they have arrived, Reborn goes and inform the rest.
He flees the Vongola Base together with the rest as Squalo tries to buy time by fighting with Zakuro. Upon hearing Haru's suggestion of a hideout, he decides to agree into hiding at the place Haru knows of.
Upon reaching the place, which turns out to be Adult I-Pin's ramen customer's place, (uncle) Kawahira suspiciously tells them that he knows what is going on and they can trust him on luring away Zakuro. At first, Reborn was suspicious but decides to trust him. When Kawahira uses his Segno Hell Ring to create fake killer intent to lire Zakuro away, Reborn starts to ponder who exactly Kawahira is, he is being able to create strong illusions too.
When Kikyo, Bluebell and Zakuro arrives to take Yuni away, Reborn joins in Gamma and Tsuna in defending Yuni. Reborn sits on Basil'sAlfin to travel to the air to help out, shooting at Kikyo, tell him that the Vongolas do not fight alone but as a team. With that inspirational sentence, the rest of the family becomes prepared to fight against Kikyo, Bluebell and Zakuro. Kikyo decides to retreat, leaving Reborn and the family behind.
Fleeing into the forest according to Yuni's suggestion, he tells Tsuna that he has to come up with a plan to continue protecting Yuni from Byakuran. After seeing the slight conversation between Yuni and Gamma, Reborn decides to talk to Gamma about his feelings for Yuni. As Gamma and Reborn walk away from the camp, Reborn tells Gamma that he should stop treating Yuni like a child and admit her feelings towards him.
In the following morning, following Irie's plan, he stays behind at the camp with Tsuna, Fuuta, Kyoko, Haru, Lambo, I-Pin and Irie himself (being injuried badly from Choice).
When the 7³ set ring bosses, the Mare and the Vongola calls, Yuni's Sky pacifier resonates and she floats upwards. Determined to protect the Arcobaleno's boss, Reborn tries to break the barrier around Yuni, only to get deflect off.
Reborn, getting suspicious, uses the opportunity on the Simon Family guarding Tsuna to test Koyo Aoba (since it was his turn). Just nice, Ryohei appears at Tsuna 's house, following Koyo's taunts on a piece of paper. Upon Nana's suggestion, he decides to give the friendly rivals a study test (which they share the hatred of studies, both being 'idiots'). He gives them an easy test written on extra hard plates. He slyly tells them that if they manage to break the plates, he would have to postpone the test. He watches over the duration of the two spending time in Tsuna's room. When Tsuna's room explodes, he rushed up with the rest to see the plates broken by Ryohei's Maximum Cannon . He was impressed by Ryohei's strength, but was more shocked by Koyo being able to withstand Ryohei's Maximum Cannon without receiving any injuries.
Reborn arrives at the island with Tsuna, Gokudera, Lambo and Ryohei on the Ninth's boat with his guardians. He debarks with Tsuna and his remaining guardians to the island. When Tsuna activated his new Vongola Gear when the Simon Famiglia arrived, Reborn felt that Tsuna feels different.
After Ryohei and Koyo collapse because of the severity of their injuries, Tsuna, Gokudera and Reborn rush to their side to provide medical attention. However, the Vendice intervene, declaring that since both combatants lost, they were both to be imprisoned in Vendice. Reborn doesn't get the memories contained in the First Key.
After the Vendice take their leave, Reborn with Tsuna, Gokudera and Lambo carry on walking on the road. Soon, they reach a town which looked like the town Giotto and G. met Simon. There, they meet P.Shitt. Reborn observes the battle between P.Shitt and Gokudera. He was impressed when Gokudera wasn't disllusioned on Tsuna and still insists on becoming Tsuna's right-hand man, trying to live it up to G. .
Reborn seems to be a bit shocked with Enma suddenly appearing to challenge Tsuna. Sensing that something is going amiss with the fight he tells Gokudera (who was holding Lambo) to back off and take cover. He also gets shocked that Tsuna's father is mentioned to have been involved in the murder of Enma's family.
On the road once again, Reborn analysed Tsuna. Tsuna, hurt and stunned mentally (but not physically, he noted), instructs Gokudera to protect Tsuna at all cost. He and Gokudera sees the mysterious helicopter but brushes it off. When Adelheid appears, Reborn, for the first time on the island, gets a bit worried. He tells Gokudera not to attack her since he has exhausted himself and cannot use his Vongola Gear just yet, with Tsuna still in a state of shock and Lambo winning his round out of luck entirely, hence, unable to fight her. Adelhied yells at them, telling them that they are supposed to be now fighting on pride and when Hibari arrives, Reborn smiles.
Reborn is Timoteo's most trusted Assassin. Timoteo is Vongola IX, and, as so, is the one who pointed him to teach Tsuna how to succeed the Vongola Famiglia. Reborn thinks very highly of him and respects him. They often communicate with letters about Tsuna's progress and growth when he teaches him. The Ninth seems to reveal many secrets of the Vongola to Reborn since he knew that he can trust him enough with it. When Xanxus stated that he had done something to the Ninth at Lightning Ring Battle, Reborn already prepared with his gun. Also, when the Ninth was revealed to be inside Gola Mosca as part of Xanxus's scheme, he stated that he had already lost his patience but wouldn't fight to appreciate the Ninth's will. He also often convinces Tsuna to think about the Ninth's feelings when he refused to take part in the Inheritance Ceremony.
Tsuna is Reborn's student. Reborn was sent to train him to make him a true successor of the Vongola Famiglia. He is quite hard and fierce to Tsuna, his Spartan methods of training, which make Tsuna more often than not, involved Tsuna getting shot, facing danger, and humiliation. This makes Tsuna become wary of him, and, due to Reborn's involvement with the Mafia, makes Tsuna try to avoid him. However, they later form a bond of friendship that allows them to work together after the many situations they have been through together and this bond is what makes a drastic improvement in Tsuna's ability and character to lead the Vongola, something that Tsuna recognizes, though Reborn still largely remains a teaching figure.
Reborn forms a special relationship with Luce, Aria, and Yuni, who all share the same blood and destiny. Before becoming an Arcobaleno, Reborn seems to be close to Luce and cares for her. Luce was also the one who commented that Reborn's sideburns were his most attractive feature. Reborn is mostly seen with Luce and talked about personal or Family problems. After Luce's disappearance, Reborn was also the first person who realized the resemblance of Aria with Luce and apologized to her for forcing her to carry the Arcobaleno curse. Aria also sees him as a good friend possibly because of his relationship with her mother. In the Future, the first time Reborn met Yuni, he immediately recognized her, just like when he met Aria. Yuni also immediately called Reborn "Uncle." He can act very protective of Yuni because she is the Boss of the Arcobaleno. He is also the only one who understood her feelings and her destiny as the Sky Arcobaleno, just like her mother and grandmother.
Colonnello, Lal, and Fon are Reborn's old friends. Colonnello claims to be his great rival but they actually have a lot in common and share some of the same qualities and traits, like having a sharp tongue and sleeping out of the blue. They also often punish Skull when he had done something stupid. Lal acknowledges Reborn's strength and even admitted that he was the strongest Arcobaleno, though she is often irritated by him because he knows what she was thinking and what action she will take, which ends up in argument. Reborn rarely interacts with Fon since Fon lives in China, but they are on good terms. Reborn acknowledges Fon as a high-skilled martial artist and both of them also give some suggestions to each other whenever needed. Despite this, he sees both of them as important comrades. Skull, on the other hand, is only seen as an errand boy or a lackey, which annoys Skull because he feels that Reborn never sees him as an equal, but also found that he's afraid of Reborn when he starts to punish him. Skull often tries, to no avail, to prove that he is superior. Reborn and Mammon don't seem to be on good nor bad terms; however, Mammon thinks of Reborn as a shameless and foolish person but, at the same time, is also aware of his strength. Reborn never considered Verde as a comrade and found it hard to trust him due to Verde's obsession with his research and the fact that he will do anything to accomplish it. Verde only thinks of his research and didn't care when he broke the Arcobaleno Pact, and he sees Reborn and the others as merely a subject of his research. He commented that he found it unpleasant to be with the other Arcobaleno and Vongola. Even though the Sky Arcobaleno is the boss of the Arcobaleno, Reborn is seen more as a leader figure of the other Arcobaleno since he always gives instructions whenever the Arcobaleno duties are involved and no one seems to object besides Skull and Mammon.
Reborn Costumes - He likes to wear different Costumes for spying purposes.
Leon - A shape shifting chameleon and Reborn's main Weapon, it is also his partner. Though not seen always in battle, he is so strong that he can handle Tsuna and his Guardians without any trouble.
Gun - Reborn uses this on the first Episode of Reborn! Reborn uses this to either shoot someone or somebody. Also, he uses this to shoot Tsuna with the Dying Will Bullet or the Hyper Dying Will Bullet.
Magnifying Glass - Reborn uses this on the first Episode of Reborn! Leon transforms into a Magnifying Glass and allows Reborn to see someone's personality.
Reverse One Ton - Reborn used this in chapter 6 (Russian Roulette). It is a one ton mallet that can remove the effects of the dying will bullet to a person. He also stated that he is the only one who can use this.
Parachute - Reborn uses this on the first Episode of Reborn! Leon transforms into a Parachute that allows Reborn to fly around anywhere.
One Ton Mallet - Although only shown in the anime for comedy purposes in the manga, the One Ton Mallet is described of its Ability that only Reborn can use. At will, Reborn can lift and swing this Weapon around as if it were as light as a feather and if Reborn hits someone with it, not only will their Dying Will Flames will be extinguished, but it can also be used just as a normal Weapon.
Reflect Mirror - While conducting his own Trial, Leon transforms into a Mirror and Reflects all and throws back the attack to the enemy, even the Sky Flames is to be Reflected when its suppose to engulf everything.
Chaos Shot - While conducting his own Trial, Reborn with his partner Leon fires a set of Sun Flames that numbs all the body's organs and nearly shuts them down making the body act as if it were dead. It acts as a homing missile and can even split into two or more Chaos Shots at will.
Reborn's usual gun when Leon transforms is the CZ75 1ST.
Reborn's can fire a bullet with accuracy within 0.05 seconds.
He had at least 4 girlfriends.
Reborn, along with Colonnelo often sleeps with his eyes open, as does his pet chameleon Leon.
In the fourth fan poll, Reborn ranked ninth, with 3,375 votes.
He calls Dino and Tsuna his "No Good Students"
Reborn has a Masters Degree in Mathematics.
Reborn's favorite drink is espresso.
Reborn stars in his own interview, "Mr. Rebboku's Ciao Ciao Interview" on 3 special DVD sets.
Reborn is a member of the Italian bird society.
Reborn states that he can read minds. He is also shown to know what Tsuna and Lal are thinking about.
Reborn is said to be able to understand Bug Language as he has various insects for Henchmen.
Infant Reborn's Seiyu, Neeko, currently hosts the third installment of Katekyo Hitman Reborn's ReboRaji Internet radio show.
Sometimes, Reborn's shadow is in the shape of his original adult form, such as when he first shows up to train Dino, and when he trained Yamamoto during the Future Arc.