Ash Ketchum (seasons 1-13, 17-25)

Ash Ketchum is the main protagonist of the Pokémon series. His signature Pokémon was always a Pikachu.

Why He Rocks

 * 1) Ash made a lot of really good friends in the past seasons; especially in X&Y/XYZ.
 * 2) His Pikachu was iconic to the point it became Pokémon's mascot.
 * 3) Ash's Pokémon, such as Pikachu, Charizard, Heracross, and Greninja are awesome (Especially Charizard and Greninja).
 * 4) His relationship with Serena is extremely heartwarming.

Bad Qualities

 * 1) Similar to Bart Simpson, he never aged.
 * 2) In Sun and Moon, he got flanderized going from immature to immature.
 * 3) He has been protagonist for way too long.