Itachi Uchiha

Rank: Itachi was a Genin, then a Chūnin, and later joined ANBU, where he rose to the rank of ANBU Captain, becoming one of the youngest members to achieve that position. After leaving Konoha, he became an S-rank Nukenin and a member of Akatsuki.

Behavior: Itachi is extremely calm, reserved, and polite. He speaks calmly and rarely loses his composure, even under pressure. He is observant, intelligent, and carefully analyzes people before acting. He doesn't usually boast about his strength, nor does he underestimate his enemies; he can readily recognize when someone is skilled.

Although he may seem cold and distant, he is actually very compassionate and protective of the people he considers important. He prefers to avoid unnecessary arguments, and when he must confront someone, he tries to end the conflict quickly. He also tends to carry his problems alone and hide his true emotions behind a calm demeanor.

Tastes

Onigiri with kombu seaweed and cabbage, his favorite foods according to the official website.

Sweets, especially dango, according to character data.

Visiting traditional Japanese cafes is one of his hobbies.

Tranquility and quiet places.

Peace; it is a particularly important concept for him and appears as his favorite word in the character data.

Spending time with Sasuke when they were little.

The people he values ​​and protects those he considers important.

Dislikes

Steak, which is listed as his least favorite food.

Unnecessary wars and conflicts.

Violence without purpose.

That innocent people suffer because of the decisions of others.

People who endanger peace.

Cruelty and a lack of regard for life.

Confrontations that cause unnecessary harm to other people.

Hates

War and everything related to it, due to what he witnessed from childhood.

Someone threatening his brother or the people he considers important.

Conflicts caused by ambition or power.

Having to resort to violence when there is another alternative.

Itachi is especially interesting because, despite being extremely powerful and capable of acting very coldly, his personal goal was always closely linked to peace and protecting what he loved.

Ninjutsu
Katon: Gōkakyū no Jutsu: Great Fireball Technique.
Fire Release: Fire Release Technique: Multiple Fire Projectiles.
Amaterasu: black flames produced through the Mangekyō.
Bunshin no Jutsu: clones used primarily to deceive and create opportunities.
Sealing techniques: especially through the Susanoo and the Totsuka Blade.
Itachi can also combine ninjutsu and genjutsu extremely quickly, as demonstrated during his fight against Sasuke.
Naruto Official Site
Other dōjutsu and special techniques
Izanami: a forbidden ocular genjutsu that can trap the target's consciousness in a repetitive cycle. Itachi used it against Kabuto during the Fourth Shinobi World War.
Naruto Official Site
Genjutsu through eye contact: can trap an enemy practically the instant eye contact is established.
Genjutsu using the finger: even without directly relying on a full gaze, it can use illusions in unexpected ways.
Weaknesses
Illness: During his time in Akatsuki he was seriously ill, which considerably limited his stamina.
Short duration of prolonged combat: he could not maintain his maximum power for long periods.
Mangekyō Sharingan: its use consumes a lot of chakra and puts a lot of pressure on the eyes.
Tsukuyomi and Amaterasu: the repeated use of his Mangekyō abilities quickly exhausted him.
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Susanoo: although it is one of his most powerful defenses, maintaining it also involves a huge consumption of chakra.
Physical condition: his illness meant that his body could not sustain prolonged battles at the level of other great shinobi.
Overall, Itachi stands out for his Sharingan + Mangekyō + genjutsu + ninjutsu + strategy + Susanoo, making him especially dangerous because he can win a confrontation without resorting to a prolonged physical battle.

Itachi is one of the most well-rounded shinobi of the Uchiha clan. His specialization combines dōjutsu, genjutsu, elemental ninjutsu, and exceptional strategic ability. His greatest danger lies not only in the power of his techniques but also in how difficult it is to anticipate his movements.
Skills
Intelligence and strategy: quickly analyzes the skills and patterns of your opponents.
Speed ​​and reflexes: can react and fight at high speed.
Chakra control: extremely precise, something fundamental to using his dōjutsu.
Genjutsu: he is one of its greatest specialists.
Ninjutsu: He is especially skilled in Katon and various Uchiha techniques.
Taijutsu: possesses a fast and precise style, combined with his visual skills.
Clones: Use clones and replacement techniques strategically.
Shurikenjutsu: has exceptional accuracy with projectiles and can perform extremely complex movements with them.
Sharingan
He possesses the Sharingan, which allows him to perceive movements, analyze techniques, anticipate actions, and use genjutsu. His mastery is so advanced that he can use it while performing other techniques simultaneously.
Naruto Official Site
Mangekyō Sharingan
Itachi awakens the Mangekyō Sharingan after Shisui's death. His main abilities are:
Tsukuyomi: an extremely powerful genjutsu that alters the perception of time and subjects the target to an illusion.
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Amaterasu: generates the characteristic black flames through its dōjutsu.
Naruto Official Site
Susanoo: creates a massive manifestation of chakra that protects and fights for him. Itachi's Susanoo also possesses extremely powerful spiritual weapons.
Naruto Official Site
Susanoo
Itachi's Susanoo can use:
Totsuka Blade: seals whatever it pierces.
Yata no Kagami: spiritual shield used as a defense.
Taken together, these abilities make his Susanoo especially difficult to face.

Relations
Fugaku Uchiha: his father and leader of the Uchiha clan. Itachi respected his abilities, although their differing ideals about the clan and peace eventually led to conflict.
Mikoto Uchiha: his mother. Itachi loved her deeply and, despite the clan's tragedy, he never stopped carrying the weight of having lost her.
Sasuke Uchiha: his younger brother and the most important person to him. Itachi was extremely loving and protective of Sasuke during their childhood. He even went so far as to sacrifice his own reputation and happiness to keep him alive.
Naruto Official Site
Shisui Uchiha: his best friend and an almost brotherly figure to Itachi. Shisui profoundly influenced his understanding of sacrifice and the duty of a shinobi.
Naruto Official Site
Konoha: Although he ended up being considered a criminal, Itachi was deeply committed to protecting the village and preventing a war.
Naruto Uzumaki: Itachi came to trust Naruto as someone capable of protecting and understanding Sasuke.
Naruto Official Site
Akatsuki: the organization he joined after leaving Konoha. His partner for much of his time there was Kisame Hoshigaki.

Past and family

Itachi was born into the Uchiha clan, the son of Fugaku Uchiha and Mikoto Uchiha, and the older brother of Sasuke, who was five years younger than him. From a very young age, he was considered a prodigy. At the age of four, he witnessed the horrors of the Third Great Ninja War, an experience that instilled in him a deep aversion to war and a strong desire for peace. He graduated from the Academy at age seven, awakened the Sharingan at eight, and became a Chūnin at ten.

He later joined ANBU and became caught between his clan and Konoha. The Uchiha were planning a coup, while the village was using Itachi as a double agent. He was eventually given the mission to eliminate the clan to prevent a civil war. Itachi accepted this responsibility and spared only Sasuke, distancing him from Itachi and making him hate him so that he could one day live.

After leaving Konoha, Itachi became a rogue ninja and joined Akatsuki. Although he stayed away from Sasuke, he continued to watch over him and worry about him. He was later revived through Edo Tensei during the Fourth Shinobi World War, where he was finally able to confront Sasuke again and reveal some of the truth he had kept hidden for years.

Itachi is an extremely calm, reserved, and observant person. From a young age, he displayed a maturity uncommon for his age, constantly pondering topics such as life, death, war, and the meaning of peace. He is intelligent, analytical, and strategic, and rarely acts impulsively. He prefers to observe and understand a situation before intervening.

He has a serene and reserved personality. He doesn't usually show his emotions openly and maintains a calm tone of voice even in dangerous situations. He may seem cold or distant, but that appearance hides a deeply compassionate personality, willing to sacrifice himself for the people he loves. The official website describes him as a caring person who could be ruthless when he believed it was necessary to protect what he considered important.

He is extremely loyal and protective, especially of Sasuke. His younger brother was one of his highest priorities throughout his life, to the point of making terrible decisions and bearing the hatred of others alone to keep him safe.

He is also humble and uninterested in recognition. He believes in working behind the scenes and personally taking responsibility for his decisions. He detests unnecessary conflicts and, after experiencing war as a child, developed a strong desire for peace.

In combat situations, he can display a completely different side: he becomes cold, calculating, and ruthlessly efficient. He rarely loses control or gives in to anger; he analyzes his opponent's abilities and seeks to end the confrontation in the most effective way possible.

Itachi Uchiha is tall and slender, with a light but athletic build. His skin is fair, and his face is delicate, elongated, and serene, with features very similar to those of his younger brother, Sasuke. He has long, straight, jet-black hair, tied back in a low ponytail that falls down his back, while several long strands frame his face and reach approximately to his jawline. His eyes are dark and piercing, usually with a calm expression, and are particularly striking due to the pronounced dark circles beneath them, one of his most recognizable features. When he activates the Sharingan, his eyes take on the characteristic red color with the black markings of the dōjutsu.

During his time in Akatsuki, he wears the characteristic black cloak with red clouds and a high collar that covers most of his body. He wears the Konoha headband crossed by a line, signifying his official break with the village, and beneath the cloak, he wears dark shinobi clothing. He also wears the Akatsuki ring on his right ring finger and a necklace made of three circular pieces. His posture is usually relaxed, and his movements are calm, but his gaze conveys an intimidating presence even when he remains completely still.