Sesshomaru³

Humanoid form Unlike InuYasha, Sesshōmaru is a full-fledged yōkai. In his humanoid form, he has attractive features; he is quite tall at 1.90 m and has a thin but athletic body with a defined physique. His skin is a pale tone and his ears are pointed; his eyes, which are smaller in his adult age, are an amber color, and are slanted with slit pupils. He also has knee-length silver hair with short bangs. He has a purple crescent-shaped mark in the center of his forehead that can be seen below his bangs, two magenta stripes on each cheek and a magenta stripe on each eyelid, and two pairs of stripes on each arm near his wrists above the joint of his hands, which are permanent features on his skin. As a consequence of the skirmish with Inuyasha for control of Steel Fang, Sesshomaru loses his left arm, which he later regenerates during the confrontation against Magatsuhi once he could overcome his obsession with possessing said sword and manage to create Explosive Fang, a sword that is part of his body.

Like Inuyasha, his canines are fangs (though they are usually not visible unless he transforms) and his fingernails are claws, though one notable difference from his brother is that his can secrete a corrosive venom. When Sesshomaru was younger, he possessed more feminine features and his eyes were large.

Outfit Sesshōmaru's armor includes a spiked pauldron covering his left shoulder, attached to the upper section of his breastplate, and "lotus petal" skirts. When damaged, the armor automatically regenerates. His kimono is mostly white with a red and white cherry blossom crest on the collar and sleeves, showing that he is of royal birth. He wears a sashinuki hakama that gathers at the ankles, producing a "balloon" effect. His footwear consists of a pair of armored black boots that extend to the ankles.

He wears a yellow obi around his waist, to which he attaches Sacred Fang and Explosive Fang, although he previously carried Tokijin, a sword made from the fangs of the Naraku extension known as Goshinki and created by Totosai's banished student, Kaijinbo; on his right shoulder he carries a stole of thick white fur (Mokomoko) which is part of his body but is not a tail as was once thought. Its function seems to resemble that of a shield. In his youth, Sesshōmaru wore a slightly different outfit. His kimono was cream-colored and had purple leaf patterns, and he wore a blue belt.

Its true form is that of a giant, white-furred dog with long ears. Its eyes have red sclera and slanted blue pupils. Its Mokomoko remains wrapped around its muzzle like a leash; though it's very unusual for it to take this form, as it unleashes its full power and, in its opinion, it can't find anyone worthy of a fight that could be taken seriously.

In his original form, Sesshomaru appears menacing, with the yōkai markings on his body widening and becoming more apparent, the stripes on his usually smooth cheeks becoming jagged and changing to a somewhat more ferocious color, and his mokomoko wrapping around his neck like a leash and stretching across his entire body.

He has only fully transformed into his yōkai form three times: Once during his battle with Inuyasha, resulting in the loss of his left arm, which unleashed his resentment towards his brother, whom he considered inferior due to his human roots and for having been chosen by his father to inherit Steel Fang in his place. The second time when he met his mother, and the third during the battle against Magatsuhi. On this occasion, Sesshomaru finally understands the words of his late father and finally obtains his true strength which he himself was capable of creating, which manifests with the appearance of Blast Fang and the subsequent regeneration of his left arm.

Sesshōmaru, born from a great demonic bloodline, possesses a rare perfect power that many demons desire. Because of this, he was always calm and confident in his power, displaying a stoic, calm and calculating personality at almost all times. The only trait he did not inherit from his father was his affection for humans, but this manifested itself later in his life. His calmness often kept his thoughts free from emotional influences. However, Sesshomaru shows a smile full of malice when there is something that catches his attention and interests him. At the beginning of the story, Sesshomaru was shown to be a little more expressive, being presented as someone arrogant when aware of his great power, denying and belittling his half-brother Inuyasha for his human side.

His air of detachment and indifference stemmed from the dignity only one possessing such rare demonic power could command. Sesshōmaru was more or less emotionless, with only anger, annoyance, and dissatisfaction showing on his face. Because both his heart and body were strong, he had no desire to possess the Shikon Jewel, nor to conspire with allies. Sesshōmaru even responded sarcastically towards Naraku, who had assumed an air of arrogance due to his demonic power. In battle, he judged his enemy's power level and attacked with the minimum necessary power. Anyone in his path was considered an enemy to be exterminated without hesitation. He didn't restrain his power, not even against women. He rationalized that all his prey were equal and he defeated them. For someone with so much pride in his power, cooperation was a sign of weakness, and being alone was a condition for the strong. Once he judged someone as an obstacle, he hastened to kill them without hesitation. Sesshōmaru had a very inquisitive mind when something mattered to him, but at the same time, he had almost no tenacity of purpose. If he became interested in something else, he would arbitrarily turn his back on what he was doing, even during battle. Like his fighting style, he rushed to make decisions and act immediately.

Sesshōmaru was obsessively proud of his father, Tōga, whom all demons revered. Because he respected his bloodline so much, he despised Inuyasha and his human mother, Izayoi. He insulted Naraku, who tried to exploit Sesshōmaru's power. Anger welled up within him for not being able to wield the Steel Fang, the sword that could cut down a hundred demons, which his father had left behind. He resented Tōga for leaving the Steel Fang in the hands of Inuyasha, whose power was weaker than his own. However, over time, Sesshōmaru came to understand why his father gave him the Sacred Fang and set aside his dislike of his half-brother, even showing great concern for him on rare occasions. He refused to use the Explosive Fang against Inuyasha when even Magatsuhi noted it was the obvious choice, and it was hinted that he actually cared for Inuyasha but refused to admit it when he was protecting him from Sō'unga and his "Dragon Whirlwind." Sesshōmaru had stated that he only sought to fight the strongest beings and how he had wanted to fight and defeat his father. Sesshōmaru's love for his father was so great that, although he inherited the (at that time) useless Sacred Fang, he kept it around for sentimental value. During the short period it was stolen, he stated that the Sacred Fang wasn't a sword he would miss if he lost it, if it weren't for his father [2].

He used to feel nothing for anyone, but meeting several people, such as his brother Inuyasha, Naraku with his numerous proposals, and Rin, brought a change to his heart. After saving Rin and becoming a true owner of the Sacred Fang, he began to show feelings behind his ruthless and cruel words. He stopped Inuyasha's demonic rampage by controlling his power, and he did so like an older brother scolding a younger brother, although he claimed he would kill Inuyasha, despite his actions showing otherwise. There was even a time when Sesshōmaru was angry with Inuyasha for rampaging around his father's grave, but he put his sword aside before hitting him with only his fist. By putting his sword aside, Sesshōmaru showed that he was simply scolding Inuyasha for desecrating his father's grave, instead of trying to hurt or kill his younger brother. Sesshōmaru didn't even hit him that hard, or Inuyasha would have been seriously injured. He even refrained from killing Kohaku when he could easily have done so, when he looked into his eyes and saw the emptiness and that he had given up on everything.

Sesshōmaru genuinely cared for Rin and Jaken, and though he rarely showed it, he appreciated their loyalty. He originally greatly despised protecting the weak, viewing it as a waste of time. Unlike Tōga and Inuyasha, Sesshōmaru struggled to admit he had people to protect (Rin and Jaken), and out of pride, would never admit to doing so. Sesshōmaru's compassion for Rin was evident, but he preferred to hide it, as it would stain his pride. However, he showed his love and concern for her when she died a second time due to his stay in the Underworld. Sesshōmaru entered hell with the purpose of rescuing her, but upon learning he couldn't save her life, he felt defeated. Realizing it was his drive to strengthen the Sacred Tooth that led them to hell and ultimately killed her, he threw the sword aside, stating that if the sword gained power at the expense of Rin's life, it meant nothing. However, when Sesshōmaru's mother revived Rin, he felt greatly relieved. Though he cares for her, he doesn't spoil her, letting her fend for herself when hungry, but maintains a close enough distance to come to her aid when necessary. Aside from Rin, he has become more affectionate towards Jaken, whom he used to regularly threaten to kill and treat like a slave if he failed to complete a task. Afterwards, while he would still beat Jaken whenever he annoyed him and force him to accompany him even in dangerous situations, he would tell Jaken to stay back when facing an enemy that would endanger the demon-dog if it was too close.

When Kagura was injured, Sesshōmaru originally intended to leave her in the river she was drowning in, but when Rin attempted to save her and Jaken followed Rin, Sesshōmaru pulled the three of them out of the river. He stayed there afterwards and warned Kagura not to do anything that would get her killed. Later, however, before Kagura's death, Sesshōmaru sought her out and considered using Sacred Fang.

He has also saved Inuyasha's friends on several occasions. On their way to Mount Souls, Sesshōmaru saved Kagome, Miroku, and Sango from the poison master Mukotsu, one of the Shichinintai, but only claimed that he killed Mukotsu because he did not answer his questions. Another example was when Inuyasha and his companions were involved in a fight with the "water god" Numawatari; when Sesshōmaru arrived, he insulted Inuyasha's inability to kill a "low-life demon", and then easily defeated Numawatari using his Meidō Zangetsuha ability, leaving immediately afterward.

Also, when Byakuya, the most recent incarnation of Naraku, was about to take Kohaku, who had one of the last three fragments of the Shikon Pearl, back to Naraku, Sesshōmaru appeared and cast a Meidō Zangetsuha from a distance. Byakuya fled, claiming that he did not want to die and commented that it was so unlike Sesshōmaru to save someone. From then on, Sesshōmaru seemed to have taken Kohaku under his wing, albeit in his typical, reluctant manner. Later, when Kohaku's fragment was tainted by Magatsuhi, Sesshōmaru attempted to save Kohaku at the cost of a large wound to his arm.