Son Goku (Evolution, 2015-2018, and 2021)

Son Goku (born Kakarot) is the main protagonist of the Dragon Ball series. Goku is a Saiyan originally sent to destroy Earth as an infant. However, a head injury at an early age alters his memory, ridding him of his initial destructive nature and allowing him to grow up to become one of Earth's greatest defenders.

While he was well-known and liked in both the original Dragon Ball and Dragon Ball Z, he went downhill after Dragon Ball Super was released, to the point that fans started to hate him.

Bad Qualities

 * 1) Goku has now split into two versions of himself in the anime and the manga - and both of them are flanderized into near-character assassination:
 * 2) * "Anime/Toei Goku" is not only dumber but also doesn't take anything around him seriously. He even forgets things that he learned in the original Dragon Ball series (e.g., he starts messing around with enemies again, something he'd previously learned to stop doing after the Freeza Saga).
 * 3) * "Manga/Toyotaro Goku" has the same problems as Toei Goku, but he's more of an unlikeable asshole than his anime counterpart. He even almost calls Gohan a "little shit" after learning that he can't participate in the Universe 6 tournament. In fact, unlike the Anime/Toei Goku, he doesn't even improve himself at all, making this a character derailment.
 * 4) He becomes more selfish to the point that he doesn't even care if the entire multiverse gets destroyed.
 * 5) His top priority for fighting villains is merely to see how strong they are, in spite of the threat they pose for his friends and family, only becoming enraged when they harm them.
 * 6) While Goku is not a perfect father in any means, he does care about Gohan, Goten, and Pan in the old Dragon Ball series. Nowadays, he barely acknowledges their existence, even mentioning at one point that he doesn't remember when Gohan was born.
 * 7) He's become a spotlight hog, along with Vegeta (though that problem dates back to Dragon Ball GT, he at least had a personality in that series).
 * 8) He refuses to learn from his mistakes, even giving the evil sorcerer Moro a senzu bean whilst the latter was near-death, allowing him to fuse with the Earth itself and turn his own body into a galaxy-destroying bomb.
 * 9) * And to make matters even worse, he doesn't show any remorse for what he did or feel guilty about his mistakes, showing that he's now reached a level of sociopathy on par with Saiyan Saga Vegeta.
 * 10) In contrast to Vegeta, he has little-to-no interest in spending time with his family and friends, having spent most of his time training off-world. In the original Dragon Ball manga, he did have adventures with his friends and family even as an adult and even hung out with them from time to time. Here, he almost completely ignores them and always makes excuses to train in spite of Chi-Chi's protests, in which she leniently lets him go to come back for dinner anyways.
 * 11) While his Saiyan mindset compels him to look for a great challenge to further strengthen himself, his urges to fight strong opponents have become an exaggerated obsession to the point where he even gave Lord Zeno the idea to set up the Tournament of Power for that sole purpose. This resulted in Universe 9 putting a bounty on Goku's head when they found out about his involvement in the Tournament of Power.

Good Qualities

 * 1) "Anime/Toei Goku" thankfully becomes more like himself again in the latter half of Super, with him fully reverting to his DBZ characterization in the Dragon Ball Super: Broly movie.
 * 2) He still has his share of good moments.
 * 3) He was a good character back in the DB/DBZ era of the show.
 * 4) Masako and Sean still do good voices for Goku.
 * 5) He still has his great and recognizable character design as an adult Saiyan.

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