Fans have seen many powerful Uchiha on Naruto with the ability of the Mangekyo and we've picked 5 strongest and 5 weakest of them all.
The Mangekyo Sharingan is an evolved form of the Sharingan which can be awakened by a user upon experiencing great emotional trauma, usually triggered by the death of someone close to them.
This eye grants tremendous powers which usually come in two distinct abilities, one in each eye. Along with that, when awakened in both the eyes, the user of the Mangekyo Sharingan can also awaken the Susanoo, one of the strongest powers in Naruto. Fans have seen many powerful Uchiha with the ability of the Mangekyo and we've picked 5 strongest and 5 weakest of them all.
10. Weakest: Danzo
Danzo Shimura was one of the elders of the Leaf and the founder of the Root Anbu. He was quite a fearsome ninja who had also gained access to multiple Sharingan, including the Mangekyo Sharingan of Shisui Uchiha.
Danzo's usage of this eye, however, wasn't good at all. As explained by Madara, the eye is usually most efficient with the original user. Danzo, someone who wasn't even an Uchiha, was thus a bad user of the powers.
9. Strongest: Madara Uchiha
Madara, along with Izuna, was the first Uchiha to awaken the powers of the Mangekyo Sharingan. In time, he made his eyes even stronger by transplanting his brother's eyes into his, making his Mangekyo eternal in the process.
Madara's Mangekyo Sharingan abilities remain unknown to date, for some reason. His only known power is the Full-body Susanoo which was strong enough to slice through mountain ranges with a casual slash.
8. Weakest: Fugaku Uchiha
The father of Sasuke and Itachi, Fugaku was the leader of the Uchiha clan prior to the Uchiha Clan Massacre. Although little was known about him initially, in Itachi's story, he was revealed to have the Mangekyo Sharingan as well.
The abilities of his eyes remained unknown, however, it is known that his eye was powerful enough to control the Nine-tails, had he willed it.
7. Strongest: Obito Uchiha
Obito Uchiha was one of the strongest Uchiha to ever exist who awakened his Mangekyo Sharingan during the Third Great Ninja War after witnessing Rin die. Obito's eye granted him the ability of Kamui, a powerful space-time ninjutsu.
Even with just one eye, Obito came to be known as an incredible threat to the entire world. At a very young age, he was strong enough to fight Minato Namikaze. Over the years, he gained tremendous control over this eye. Unfortunately, Obito couldn't use this eye in the 10-Tails state, making it useless.
6. Weakest: Izuna Uchiha
Izuna was the brother of Madara Uchiha and one of the most powerful of the clan in history. Along with Madara, he was the first Uchiha to awaken the powers of the Mangekyo Sharingan, which he did by killing his best friend.
Unfortunately, the abilities of his eyes aren't known to date, but he was skilled enough to rise to the top of the clan and fight evenly with Tobirama Senju. Ultimately, he fell in battle to his rival.
5. Strongest: Itachi Uchiha
Itachi Uchiha was one of the best Mangekyo Sharingan users, if not the best, in the series. He awakened his Mangekyo Sharingan after the death of Shusui Uchiha. Over the years, he trained it to a degree where he unlocked the powers of the Tsukuyomi and the Amaterasu.
Itachi Uchiha could also use the Susanoo to quite a decent extent and his Avatar wielded the power of the Totsuka Blade and the Yata Mirror, making him invincible.
4. Weakest: Shisui Uchiha
Shisui was one of the very few Uchihas to be spared from the Curse of Hatred. Being thrown into war at quite a young age, Shisui Uchiha awakened his Mangekyo Sharingan before the age of 10, which is a massive feat.
His eyes granted the ability of Kotoamatsukami to him and using this power, he could cast a powerful genjutsu capable of manipulating others without them even realizing it. While the ability itself was powerful, Shisui failed to ever demonstrate its proper use. Furthermore, he lost this eye to Danzo, proving once again that he wasn't as strong as some of the others.
3. Strongest: Indra Otsutsuki
Indra Otsutsuki was the elder son of Hagoromo and he inherited the visual prowess of his father. At some point, he awakened the Mangekyo Sharingan and trained it to a degree where he came to be known as the strongest.
Indra's Mangekyo Sharingan abilities were unknown, however, he was capable of using a Fullbody Susanoo with just the Mangekyo Sharingan.
2. Weakest: Kakashi Hatake
Kakashi gained the Mangekyo Sharingan at the same time as Obito, upon witnessing the death of Rin Nohara. Years later, he gained access to the power of Kamui and mastered it.
Although a strong fighter, Kakashi not being a true Uchiha meant that he couldn't use the eye properly. Just using it a few times often rendered him unable to move for days.
1. Strongest: Sasuke Uchiha
Undoubtedly, the strongest Uchiha of all-time, Sasuke gained the Mangekyo Sharingan after the death of Itachi Uchiha. His eyes granted him the power of Amaterasu and Flame Control.
Along with that, Sasuke also gained the ability to use Full-body Susanoo, making him extremely powerful. In time, his left eye evolved into a Rinnegan, grating him the ultimate power in the process.