Obanai Iguro

Obanai's strict and unforgiving nature. Obanai is a very harsh and strict individual who shows no concern for those who do not abide by the rules of the Demon Slayer Corps. His expectations for his fellow Demon Slayers are quite unrealistic, as he was seen berating Tengen Uzui for suffering heavy wounds against the lowest Upper Rank whom he called the "weakest" and telling him to "fight to the death" after Tengen insists on retiring. Tengen's retirement also highlights Obanai's devotion to the future of the Demon Slayer Corps. He does this often at others' expense such as when he tied up lower-ranked Demon Slayers and used them as obstacles during Hashira Training - all for relatively petty reasons. He also sees the newer Demon Slayer recruits as weak and incapable of improvement, expressing extreme surprise when Tengen informs him that Tanjiro Kamado survived the battle with Daki and Gyutaro. Obanai has a rather prominent habit of pointing at people with his finger in an accusatory manner while berating or talking unfavorably about someone. left|thumb|200xObanai threatens Tanjiro for growing too close to Mitsuri. Despite his merciless personality, there are two people he cares deeply about: Kagaya Ubuyashiki and Mitsuri Kanroji. He has a crush on Mitsuri, and he often lets his feelings shine through by sharing meals with her and giving her gifts. Obanai seems to let his overprotectiveness of Mitsuri show at times, such as when he threatens Tanjiro for growing too close to her. It was implied that he has a crush on Mitsuri because of the cheerful personality she retained despite going through very hellish training. Talking with her also made him forget all the strife and conflict he had encountered during his past, making him feel as if he were an ordinary young man. Like all the Hashira, Obanai has a great deal of respect for Kagaya. thumb|Obanai's traumatic past taking a toll on his mental health. Obanai is noted to possess an immense sense of self-loathing due to the fact that he was born to a selfish and immoral clan who would mercilessly sacrifice even newborns to a demon for their own monetary gain. Obanai considers himself and his family so tainted, that years after the other members were killed, he still felt as if his family were digging their nails into his skin to make sure he couldn't go anywhere. He even goes as far as to believe that, in order for him to ever be worthy of Mitsuri, he would first have to die and cleanse himself of his corrupted blood before ever confessing his feelings to her. His upbringing also seems to be the cause of his gynophobia since he was born into a family of only women who treated him like a tool. The trauma of his past can also be seen in the form of his facial bandages that he dons to cover the terrible scars he received, never removing it until the final battle. In addition to the horrible treatment he received from his family, of being treated as a mere tool and sacrifice, Obanai was deeply affected by the words of resentment and hatred from his only surviving cousin when she said that the entire family died simply because he ran away. Although he recognized that her grudge and words were illogical, he chose to accept that he was at fault and even considered himself as corrupt as his family was, believing he was not worthy to live a normal life. This shows that despite the various unpleasant traits of his personality, Obanai actually has a conscience and morals, unlike his family. Obanai has an incredible sense of determination, continuing the fight against Muzan even after he is completely blinded and covered in wounds. His ability to protect Giyu and Tanjiro throughout the fight, as well as thanking Tanjiro for helping him, and later even took a blow for him proves that Obanai was able to drop his initial grudges and become more open with people he was rude to in the past.

Obanai is a young man of short stature, pale skin complexion, and a lean, muscular build. He has straight-edged, raven-black hair of varying lengths, with the longest reaching down to his shoulders, while the shortest stop at his cheekbones, which he wears down with two shorter strands hanging between his eyes. His eyes are almond-shaped and tilted upwards on the far sides, and are uniquely colored due to Obanai possessing heterochromia. His right eye is yellow with a black pupil, while his left eye is teal, with the lower rim of the iris being a lighter shade. He is partially blind, barely being able to see out of his right eye. Obanai's mouth is usually hidden with white bandages over his lower face to hide his large facial scars, which were the result of his family horrifically cutting open his mouth to resemble that of a snake's gape. Obanai wears the standard Demon Slayer Corps uniform, which is black in the manga and tinted a deep koamaru color in the anime. The uniform consists of a button-up jacket with a stand-up collar and long sleeves, adorned with gold buttons, a shirt pocket on the left breast, and the kanji for |Metsu}} engraved on the back of the uniform. Beneath the jacket, he wears a white long-sleeved collared undershirt. The uniform is fastened at the waist with a white belt and paired with traditional tattsuke-hakama pants in the same koamaru hue. Over his uniform, Obanai wears his signature black-and-white vertically striped haori, with the hem and cuffs are striped horizontal ways rather than vertically, which covers his hands. For legwear, instead of the standard kyahan, Obanai wraps his lower legs in white bandages, giving the visual impression of traditional kyahan wraps. He also wears another set of white bandages around his lower face. His footwear consists of white zōri sandals with purple-blue straps, worn over koamaru-colored tabi socks to match the color tint of his uniform. He is also always seen with his white snake, Kaburamaru, wrapped around his shoulders. During the battle with Muzan, Obanai and the other remaining Hashira are attacked by the demon's flailing whips, and Obanai is left with three long slanted scratches over his eyes, rendering him completely blind. When he was a child, Obanai had waist-length hair that he wore tied down his back with a long white bandage and a regular-looking mouth before it was cut by his family to resemble the Serpent Demon worshipped by his clan. He also wore a plain white kimono.

Overall Abilities
Obanai cuts off Muzan's arms. As a Hashira of the Demon Slayer Corps, Obanai is a very powerful and skilled combatant. It was revealed that he was more or less blind in his right eye, meaning he ascended to the highest rank in the Demon Slayer Corps with only a single functioning eye. This, in addition to his small physique and inferior physical strength when compared to his peers, made it especially impressive that Obanai managed to ascend to the title of Hashira. During the events in the Infinity Castle, Obanai was able to quickly decapitate numerous demons on par with Lower Ranks. When engaging in battle with the Demon King, Muzan Kibutsuji, Obanai was able to land a great deal of hits on him, slashing off limbs and landing strikes on his neck over the course of the battle. After Obanai, Giyu, Sanemi, Gyomei, Zenitsu, Inosuke, and Kanao were heavily injured by Muzan's attack, Obanai was the first to regain consciousness and aid Tanjiro despite having his eyes clawed out earlier. While it should be noted that Muzan was severely weakened by the drugs in his body, he and Tanjiro nonetheless managed to fend off and push the Demon King into a corner by themselves, displaying incredible endurance. After getting directly hit by Muzan's Shockwave Energy Blast technique, he still took a hit for Tanjiro when Muzan was about to bite his head off. When the Demon King swelled his flesh and exponentially grew in size, Obanai still possessed enough stamina to unleash one technique that aided in slowing Muzan down. Even though Obanai lost his life at the end of the battle, he was undoubtedly among the biggest contributors in subduing the Demon King. |Kaburamaru}}: Obanai, having always been partially blind in his right eye, developed a combat technique utilizing his snake Kaburamaru. Kaburamaru possesses a unique ability that allows him to read and predict a target's attacks, then relay that information to Obanai. The full extent of this technique is demonstrated when Obanai is completely blinded by Muzan, but he is still able to continue fighting effectively. Kaburamaru also seems to be capable of understanding human speech and emotions, as he understood Tanjiro's instructions to grab Yushiro's paper talisman and later shed tears when watching Obanai and Mitsuri succumb to their wounds. Kanao herself stated that Kaburamaru was exceptionally clever.