Even the cruelest anime villains can change their minds. For example, Dragon BallFrom fighting on the side of evil to joining the good protectors of Earth, Vegeta and Piccolo are two of the most popular villains turned heroes. It may seem impossible at first, but a single life-changing experience can set even the mightiest of villains on a better path.

7 overpowered anime characters that would lose to Vegeta
Vegeta is known as one of the strongest characters in Shonen anime history and here are some of the strongest characters he would defeat.
That said, Vegeta and Piccolo aren't the only villains to turn to the side of good in the anime. These powerful anime villains initially antagonized the protagonists of their respective series and did everything in their power to stand in the way of their goals before eventually redeeming themselves.
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9
Franky became the Super Shipwright of the Straw Hats in one piece
Joining the Straw Hat Pirates in their adventures is one of the most difficult yet rewarding decisions Franky has made in One piece. Starting out as a thief, he stole 200 million of the Straw Hat crew's hard-earned fruits to finance the expensive material for his dream ship. He never imagined that he would end up joining Luffy's crew at all.
Now, Franky serves as a Straw Hat repairman, tasked with taking care of the Thousand Sunny to the best of his ability. Of course, he doesn't ignore his personal upgrades, which make him one of the strongest members of the crew, despite not sitting on the same level as the main trio of Luffy, Zoro, and Sanji.
8
Toichiro Suzuki found purpose beyond power in Mob Psycho 100
Toichiro's bold ambition in Mob Psycho 100 forcing him to antagonize Shigeo Kageyama with his monstrous psychic abilities. He wanted to take over the world and as part of his preparation he began to store as much psychic energy as possible. With his ability to absorb psychic energy from other espers, achieving his lifelong dream was not out of reach until his explosive confrontation with Mob changed him.
Toichiro began to feel guilty as he realized that his ambition and amazing abilities had led him down the wrong path. To redeem himself, he joined a group of espers trying to stop Mob's ??? % form. Although he was unable to stop the rampage, his willingness to fight against it showed that he began to understand good from evil and grew into a better person.
7
The evil eye became a fighting ally of Momo and Okaruna in DanDaDan
The evil eye cornered Momo and Okaruna with its absurdly powerful yokai powers Dan Yes Dan. With Evil Eye controlling Jiji, he transformed the accumulated hatred into a deadly ball of energy capable of destroying anything it touched. That's not all, as its physical properties, especially its durability, make it difficult to take down.
Fortunately, Evil Eye reached an agreement with Okarun and promised to cooperate as long as he could enjoy the intense battles of the series. He may not be the prettiest semi-ally that Momo and Okarun have, but he remains a reliable force on the battlefield as long as he's in the perfect mood to fight.
6
Gajeel Redfox has earned his place in Fairy Tail
Before Gajeel Redfox swore allegiance to the Fairy Tail Guild, he led a nasty attack against them as a member of the Phantom Lord Guild. His goal was to prove Phantom Lord's superiority by taking down Fairy Tail without fail. He even clashed with Natsu Dragneel during the conflict and at one point forcibly captured Lucy Heartfilia to further his guild's agenda.
Today, Gajeel proudly fights as part of Fairy Tail, using his Iron Dragon Slayer abilities to overwhelm opponents. He can arm his own body and unleash crushing metal-based attacks. With his brutal fighting style and intimidating aura, he is a warrior few would challenge.
5
Beru joined Sung Jinwoo's Shadow Army in solo leveling
Beru, the shadow of the Ant King of Jeju Island, has gone on a terrifying killing spree Solo leveling Season 2 before you join Jinwoo's elite soldiers. He wanted to become king of the world by defeating its current king and forcing him to punish the S-rank hunters roaming his home island. He nearly wiped out all the hunters involved in the raid on Jeju Island, flying through them one by one.
However, losing to Jinwoo means giving up one's identity and personal ambitions. What he has gained is unlimited evolution, in addition to having the privilege of serving the Shadow Monarch forever. From a power-hungry ant king, Beru has become a reliable ally in Jinwoo's shadow army, someone who can lead raids on his own and even go up against superior beings with god-level powers.
4
Sasuke Uchiha became Konoha's Shadow Hokage in Naruto
Sasuke Uchiha has gone through a lot of difficult challenges Naruto, which strongly influenced his actions and decisions. He went from hero to villain before finally redeeming himself and becoming a hero again. Fortunately, Sasuke's days of shifting allegiances are over as he has fully embraced his role as Konoha's Shadow Hokage.
At this point, Sasuke Uchiha is much stronger than Naruto Uzumaki. Despite losing the Rinnegan, he still possesses the Eternal Mangekyo Sharingan, in addition to the power-ups he received before and after becoming the template for Shinju Hidari in Boruto: Two Blue Vortex.
3
Accelerator has become a reluctant savior in the Toaru franchise
The Toaru franchise has an incredibly powerful antagonist capable of vector control in Accelerator. This unique ability allows him to easily parry or redirect incoming attacks before they can touch him, proving that he deserves to be called Academy City's most powerful esper. Despite overusing his powers to fry his brain, Accelerator remains one of anime's most untouchable characters, surpassed only by a select few.
Defeating the accelerator at the hands of Kamijou Touma became the catalyst for his massive transformation. He went from mercilessly killing thousands of Misaka sisters without remorse to risking his own life to protect the Last Order, making his redemption story one of the best written.
2
Piccolo became one of Earth's most selfless heroes in Dragon Ball
Thanks to Gohan, Piccolo left his evil ways inward Dragon Ball. Instead of continuing King Piccolo's feud with Goku, Piccolo abandoned his villainous ways after he unexpectedly warmed to Gohan. Even laying down his life for Gohan has become second nature to Piccolo, showing how much he has changed.
While Piccolo isn't the strongest fighter in the series, the Super Hero Arc finally gave him a rare chance to be on par with the Saiyans thanks to his latest god-level transformation. Unlike anything fans have seen before, Orange Piccolo finally elevates the beloved Namekian to a whole new level of power.
1
Vegeta transformed from a destroyer to a defender in Dragon Ball
Softening Vegeta's cold heart isn't easy, but Bulma, Goku, and the rest of Earth's strongest protectors eventually did it. His transformation from villain to ally didn't happen overnight as it took several Dragon Ball episodes before Vegeta fully embraced life on Earth and his new family.
Vegeta is one of the strongest Dragon Ball characters of all time, strong enough to rival Goku and stand against the strongest villains of various races and universes. It's hard to gauge Vegeta's full potential as the Saiyan prince knows no end to his relentless pursuit of power.