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 problem as Toei Goku, but he's more of an unlikeable jerk than his anime counterpart. He even calls Gohan a "piece of shit" after learning that he can't participate in the Universe 6 tournament.
 * 4) He becomes more selfish to the point that he doesn't even care if the entire multiverse gets destroyed.
 * 5) 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.
 * 6) He is now a spotlight hog, along with Vegeta (though that problem dates back to Dragon Ball GT, but he at least had a personality in that series).
 * 7) 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 merge with the Earth itself and turn his body into a galaxy-destroying bomb.

Good Qualities

 * 1) "Anime 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 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.