With stoic characters, soulful nature, and powerful moral beliefs, Demon Slayer has delighted its fans. The Water Hashira Giyu is a member of the Demon Slayer Corps whose character has been detailed with his peaceful demeanor, strong sense of justice, and excellent martial arts prowess. Emotion does not come naturally to him, but there is no doubt in his manner that he is a very empathetic and a very responsible character: aspects which would be out of place in a series filled with fiery-enthusiastic and emotionally-driven characters. His character comes full circle in anime, in that other characters share this same character because of his carefree yet domineering personality, tragic birth, and attitude towards responsibility.
The following list will dive into ten anime characters that have some similarities with Giyu regarding their character, their job as a sage or a fighter, or their kind of deep-rooted emotional struggles that make them stoic. In line with them, from least to most similar, they all capture various aspects as to why Giyu is one of the most intriguing characters in Demon Slayer.
10. Roy Mustang – Fullmetal Alchemist: Brotherhood

In general, Roy Mustang is an outgoing person, and he is a leader, whereas Giyu is more, an introvert, although they have powerful similarities in their core values. Both men are ruined by their own past choices and will do anything to make it better, isolating themselves in the process. The scene in which Roy is a commander in the Amestrian army and exhibits strategic planning and juxtaposed behavior in the field is the same tactical mind and cool disposition as Giyu. Subconsciously, the two are very emotional yet withdrawn, a trait which influences their interactions and in pursuit of justice.
9. Amon Koutarou – Tokyo Ghoul

Amon is another warrior who, just like Giyu, is also a member of an elite unit and is tasked with fighting monstrous enemies. Being an investigator of the CCG, Amon has the strictest moral code and is black and white according to how he sees the world in the beginning. His personality is constantly changing when he has to balance the humanity of ghouls and his obligations. The conflict experienced by Giyu with the Demon Slayer Corps' rules and regulations also reflects similarities to the one undergone by Amon in his later character development, particularly the episode in which Giyu defends Nezuko. The two are men in the grey zones in their efforts to do what is right.
8. Scar – Fullmetal Alchemist: Brotherhood

Like Giyu, Scar has his stoic expression, arcane presence, and overwhelming physical capacity. Though the motive of revenge drives Scar at the beginning of his path, his transformation eventually turns into the path of redemption and ideological transformation. Even Giyu is oppressed by loss and survivor’s guilt and has turned his pain into purpose. Both men are emblems of moderation and metamorphosis, and how suffering can be turned into strength and enhanced with moderation.
7. Kakashi Hatake – Naruto

Kakashi and Giyu are the representatives of the trope of the strong, silent teacher. The two of them had a great deal of childhood trauma, which they carried in life into their adulthood. The well-masked character of Kakashi, the deep-seated nature, and sense of code all echoed with Giyu in the same conflicted man. Neither is respected only on strength but also because of wisdom, wisdom that is given without a great number of words but with the power of suggestion.
6. Shota Aizawa – My Hero Academia

Aizawa is regarded as a cold, harsh man, though, similar to Giyu, he balances severe practicality with soft sympathy. The two characters live in the shade of others and are motivated by a sense of responsibility. The same sense of protectiveness, especially to those under his charge, rings back with the way Giyu treats Tanjiro and Nezuko despite setting him at odds against his contemporaries. They are equally effective in their teaching methods since they are silent observers initially and interveners later with great impact.
5. Sōsuke Aizen (pre-betrayal) – Bleach

Aizen, before his notorious act of betrayal, presented as the epitome of peaceful enlightenment, as the rationality of emotion. Though his intentions differ vastly from the interests of Giyu, in regards to morality, the initial impression of Aizen being a calm, almost unemotional commander is somewhat similar to that of Giyu being stoic. Both radiate a subtle sternness, and in combat shine out a massively superfluous violence that never needs play-acting. Aizen is logical and reflects an air of surgical precision similar to Giyu when engaged in battle with demons.
4. Rengoku Kyojuro – Demon Slayer

Their characters are opposite, namely: Rengoku is warm-hearted, and Giyu is cold, but both men are confident in their desire to save humanity. Rengoku, similarly to Giyu, obeys a code of honor and does not flinch before the danger. Giyu also admired Rengoku and shows much respect to him, more so following the Mugen Train arc, thus they may be closer relatives as they shared the same ideals. Their stony faces conceal their sadness, and in the end, they both sacrifice their lives to protect others.
3. Toshiro Hitsugaya – Bleach

Cold-hearted Hitsugaya, who also has magical force abilities based on ice, contrasting with Giyu, who also has deadly intelligence, are both identical. Being a very young prodigy, Hitsugaya takes his responsibilities so seriously that he is more of an adult than a child. His stoicism, strong sense of morals, and tendencies to rebel against authority, when it is necessary, all resemble Giyu, sharing his key features. The two characters are also emotionally obtuse, reluctant to share anything without a trigger, and extremely loyal to those who know them.
2. Levi Ackerman – Attack on Titan

The fact that Levi is the biggest badass in the world, his cold and common silent demeanor, and his position as one of the most stoic warriors align with Giyu Tomioka. This qualifies Levi as one of the most iconic Stoic fighters in anime. Their rivals worship and are scared of them, excellence is second to none, and they both have emotional baggage. How Levi is concerned about his squad and stoic is remarkably the same as how Giyu is concerned about his subordinates and depressed because they fail. They become more attainable because of their moments of weakness, which they portray indirectly, despite their scaring power.
1. Kento Nanami – Jujutsu Kaisen
The most modern anime equivalent of Giyu may be Nanami. Both are men of habit, order, and steely reserve. Nanami poses a massive resemblance to Giyu with her hatred of incompetence, workplace attitude, and scrupulous character. Similar to Giyu, he is neither chatty nor expressive, but is very compassionate. Adults can easily put other people ahead of themselves, and they do not choose to put on emotional displays unnecessarily. The mentoring of Yuji by Nanami and his worldly perception of life and death are very similar to the kind of assistance Giyu provides to Tanjiro. They are alike in terms of their stoicism and selflessness, so that to a great extent, Nanami is a spiritual twin to Giyu.
Giyu Tomioka from Demon Slayer is an entirely different kind of character archetype: a quiet, reserved fighter, working under duty and marked by loss. Throughout anime, paralleled characters add gentle tones to the heavy narratives, toning down the oversized plots with their calm demeanors. Mentorship, personal codes, or simply their sheer superiority in battle, these ten characters follow the same pattern that makes Giyu so popular - these are the elements of power at its best: silent, held to a set of ideals, able to hold fast and focused on their message.