In the Naruto there are many powerful characters who have imminence amount of chakra and are know as legends in the anime! But there are only a few characters who are so powerful that they can defeat all the tailed beasts at once. Read the article to know who these characters are.
Until the the 4th Great Ninja war began we thought that Obito Uchiha was dead long ago, but it was shocking to know that he was the leader of the criminal gang Akatsuki! Obito trained hard with Madara which gave him the ability to awaken his magekyo sharingan at an early age as well when he witnessed Kakashi killing Rin. With skilled ability like the ‘Kamui’ he is strong enough to beat the tailed beasts at once.
The Legendary shinobi Madara Uchiha was one of the only powerful shinobi who could rival the power of Hashirama Senju. Madara possessed the ultimate power the eternal mangekyo sharingan, with this he could control the Kyubi. He even had the Rinnegan which makes him powerful enough to take of all tailed beasts at once.
Hashirama Senju (First Hokage)
Hashirama Senju the God of Shinobi was also the first Hokage, he alone defeated Madara and the nine tailed beast. This is enough reason to know that he has the power and ability to take on all tailed beasts at once.
Sasuke Uchiha is also a very strong shinobi who made himself strong through his hate that he had for the his brother Itachi and later on the leaf village. He even has the power of the sage of six paths that he received along with Rinnegan and the strongest Susano! He can easily take on all the tailed beasts at once.
Naruto for starters has the strongest tailed beast the Nine tails inside of him, they also share their power when needed. Along with a tailed beast he has a strong sage mode and strong will. These attributes alone are enough to conclude that Naruto can easily take on all of them at once.
Nagato Uzumaki was the first character where the Rinnegan was first revealed, his power of Rinnegan was immeasurable. Also he had the power to destroy the entire Leaf Village without him going in himself!
Hagoromo Otsutsuki was the only know sage of six paths, he was God to all the shinobies. He also was the one to bring Ninshu into existence which led to the development of the Ninja world. He was also the first son of Princess Kaguya Ōtsutsuki. Being a God probably no ttailed beast would wanna fight him or his younger brother.
Kaguya Otsutsuki was the mother of Hagoromo Otsutsuki & Hamura Otsutsuki, so this obviously makes her the strongest God!