Some of the strongest kids in anime can easily defeat monsters and powerful villains who want to harm others. Some of these mighty kids have worked hard to improve their impressive magical powers, others were born with unimaginable abilities, and there are those who have them because of questionable experimentation.
Thankfully, most of these heroic kids are also some of the smartest anime characters who always try to do their best, protect others, and only use their deadly abilities for good. Despite their young age, these powerful mages, superheroes, psychics, demons, and magical anime girls go against some of the most iconic anime villains of all time and come out as winners every time.
8 Aladdin - Magi
Magi's cute blue-haired Aladdin is not only the show's most beloved character but also one of the most iconically strong anime children of all time. Despite Aladdin's small size and young age he can cause some serious damage thanks to his impressive magical abilities and fine battle skills.
Aladdin is a goodhearted character who's not interested in destroying Earth or any other planet but if he wanted to he could use many of his powers including his elemental manipulation magic to burn and destroy his or any other world.
7 Beelzebub IV - Beelzebub
Beelzebub IV is one of the cutest and most powerful iconic anime babies, who thanks to his dad, has great demonic powers even as a small baby. Baby Beelzebub is one of the two sons of the Great Demon Lord and despite him still wearing diapers he can easily cause widespread devastation.
Beelzebub's powers are still mostly undeveloped, but he could already destroy cities with his demonic urine and was able to transform into a giant in the demon realm. He'll be more than capable of destroying the entire planet once he learns how to use the potty.
6 Lain - Serial Experiments Lain
While Lain Iwakura might not have much physical or magical strength she's pretty much an omnipotent being in the world of Wired. Serial Experiments Lain was one of the best 90s anime with a twisty and thought-provoking story and the shy hacker teen, Lain, was its protagonist.
While in the Wire, Lain can do pretty much whatever she pleases and is a God-like figure who could be capable of changing and destroying real life if she wanted to. The story follows Lain's adventures as she uncovers a dark mystery and struggles with finding her real self.
5 Sakura - Cardcaptor Sakura
Despite her young age, Sakura is one of the most powerful magicians of all time. She's also one of the few anime characters who can manipulate dreams and has all kinds of impressive and unique magical abilities thanks to the Clow Cards she captures.
Cardcaptor Sakura's young heroine was born with some magical abilities, but the mighty Clow Cards further increase her powers. There are plenty of cards in Sakura's possession that are powerful enough to destroy the world, including The Nothing card and the Erase Card both capable of erasing anything from existence.
4 Usagi - Sailor Moon
Sailor Moon is one of the most fun anime series with one of the most powerful anime characters of all time. While Usagi is an annoying teen girl during the day she turns into one of the most iconic anime fighters during the night.
In her Sailor Guardian form, she's capable of time travel, has all sorts of superhuman abilities, and is capable of using the powers of the Silver Crystal and other magical weapons in her arsenal. However, thanks to the Silver Crystal's mighty powers alone she would be capable of easily destroying the world. Luckily Usagi also fights for the good side.
3 Eri - My Hero Academia
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My Hero Academia's cutest character, Eri has one of the most dangerous powers in the iconic action series that put her and others in grave danger. Eri's Rewind Quirk gives her the ability to fully rewind the state of a living being if she wishes.
Even though her Rewind Quirk only works on living things she could still rewind everyone and everything out of existence and completely destroy the world and turn Earth into an empty dead rock. What makes her powers more dangerous is that she's too young and doesn't know yet how to use them properly. Not to mention that her horns are still pretty small which means her powers will be greatly increasing in the future.
2 Son Gohan - Dragon Ball Z
Son Gohan was Dragon Ball Z's most powerful kid warrior who could have destroyed the world if he had put his mind to it. Gohan had natural raw strength and had many transformations in the series, however, he was never really as interested in battles as his father Goku.
Despite being a shy kid Gohan was always brave and used his superhuman abilities to protect his loved ones whenever needed. As Gohan got older he became increasingly powerful and loved using and improving his superhuman abilities and martial arts skills. He was one of the most powerful characters ever by the time he became a teen.
1 Saiki - The Disastrous Life of Saiki K.
The Disastrous Life of Saiki K. might be a wholesome and hilarious slice-of-life anime, but it also has one of the strongest if not the single strongest, anime characters of all time. Saiki is an immensely powerful psychic with unmatched abilities; however, he can't use his abilities perfectly without his limiter.
Even with his limiter and peaceful and chill attitude, Saiki is capable of mind control, changing reality, shapeshifting, pyrokinesis, and even becoming immortal, thanks to his restoration ability. Without his limiter, he could easily destroy the world in many different ways and create a new one with a quick thought. Thankfully, Saiki is mostly focused on eating his beloved coffee jelly in peace and not on destroying the world.