With all said and done, Tengen Uzui is one of the strongest and most extremely skilled Demon slayer in the series, his physical abilities, combat skills and strategic thinking makes him a tough opponent to defeat in a battle.
Demon Slayer's Tengen Uzui is considered to be one of the weakest Hashira due to almost losing this fight, but the fact is that Tengen only looks weak when compared to the most overpowered Hashira.
In terms of physical strength, Tengen Uzui is far from being the weakest Hashira. While his feats throughout the Daki and Gyutaro battles certainly displayed this, there's additional evidence to show that he's not the weakest Hashira.
Kyojuro Rengoku surpasses Tengen on many levels, be it strength, Breathing Technique, or battle Intellect. So to cut a long story short, Kyojuro Rengoku is more powerful than Tengen Uzui.
5 Speed: Tengen
Rengoku's fight in the Mugen Train arc showed his incredible speed and reflexes. He was able to match Akaza's speed, and his movements were so fast that it was almost impossible for the naked eye to keep up.
8 Shinobu Kocho, The Insect Hashira
That being said, she's arguably the weakest Hashira when it comes to pure strength. However, brawn is not the only way to determine power in Demon Slayer.
Sanemi is clearly the least popular Hashira among Demon Slayer fans.
1) Shinobu Kocho
The Insect Pillar of Demon Slayer Corps, Shinobu is undeniably the smartest individual. She might not be physically stronger than others, but her intelligence is what kept her going.
After becoming a Hashira, Tengen knew that his life would come to an end one day, so he started living a flashy life and became the most flamboyant individual in the series. His flashiness is a reminder that one day he is going to die, and that is why he started living life like there was no tomorrow.
1) Tengen Uzui
Without a doubt, the flamboyant Tengen Uzui is physically the fastest Hashira in the Demon Slayer Corps. His sound breathing technique is a derivative of thunder breathing, one of the quickest breathing styles. He was fast enough to keep up with Daki without any difficulty.
1 Fifth Form: String Performance
This is the strongest attack that Tengen has used so far in the anime. In this move, he alters the gripping style. He grips one of his blades in an unorthodox manner, and then he begins to spin the other blade by utilizing the chain that holds the blades together.
Despite being the lowest of the Upper Ranks, Gyutaro showed much of his demonic prowess by making Tengen lose his left arm and his left eye in battle. However, Giyu would have been a better opponent for the demon and could have defeated him without losing any limbs.
Gyomei Himejima is the strongest Hashira in Demon Slayer. This fact has been established in the manga as Tanjiro, Inosuke and Zenitsu all agree that he is the strongest member of the Demon Slayer Corps. His strength was showcased during the fight against Kokushibo.
With her jovial and concerned attributes, as well as her “Moshi Mosh,” It is no wonder that Shinobu is the most liked Hashira in Demon Slayer.
1) Muichiro Tokito. Mist Hashira Muichiro Tokito was the youngest Hashira, and yet, possibly the bravest of them. Interestingly, Muichiro and his brother were also descendents of Kokushibo, and thus directly related to Yoriichi as well.
Being the flashy and flamboyant man that he is, Tengen has become one of the best and most memorable characters in Demon Slayer. He had a rough start when meeting Tanjiro as Tengen was one of the Hashira that thought he and Nezuko should be executed, but the two of them have come to respect each other.
Muichiro Tokito: The Mist Hashira with a Mysterious Aura
His toughness, concentration, and immense strength make him an unbeatable force, and he is widely regarded as the strongest Demon Slayer in the Corps.
Killed And Was Killed By Doma
Before arriving at the Infinity Castle, the Insect Hashira consumed roughly 81 pounds of wisteria poison. Even though Doma killed her, he died just as quickly because of the sheer amount of poison he ingested after eating her.
Shinobu Kocho Is the Weakest Hashira
Of the three Hashira who were killed by Upper-Ranks -- Rengoku, Shinobu and Tokito -- Shinobu was the only one who was killed almost instantly when she encountered Doma, Upper-Rank Two.
He trained his mind and body with the hope that one day he could eradicate all demons. Gyomei is extremely emotional and caring and is always concerned for those around him. This could be the main reason why he is always crying in the Demon Slayer series.
Rengoku's Unwavering Will Was His Greatest Weakness
Since he believes it is his responsibility as someone strong to protect those weaker than him, he will make sure he does just that. Rengoku sees any mission through to the very end, even at the cost of his life.
But, comparing the two characters in their best forms, Zenitsu might be just a tad bit faster owing to his Godspeed move.
Nezuko setting Tengen on fire. By the end of the battle, Gyutaro's poison has spread throughout Tengen's body resulting in his inability to speak. As he lays dying from the poison, Nezuko Kamado intervenes and uses her her Blood Demon Art to burn the poison out of his system, allowing him to rejoice with his wives.