Brock

Brock, known as Takeshi (タケシ?) in Japan, is a fictional character in the Pokémon franchise owned by Nintendo. In the Pokémon video games, he is the Gym Leader of Pewter City and mainly uses Rock-type Pokémon. In the anime series, Ash comes across a man that is later revealed to be Brock's father. He explains that Brock wanted to become a Pokémon Master but due to his father leaving, Brock had to take care of his many, many siblings and could not leave. This is why he became a gym leader, to stay close to his family. His father comes back and states he will take care of the family. Brock left his position as a Gym Leader to travel alongside Ash Ketchum and became a revered Pokémon Breeder. He later cultivates his skill in medicine. As of the latest Japanese episode, Brock is at Pewter City to train to be a Pokémon Doctor. He has also appeared in several Pokémon manga series, including Pokémon Adventures and the Ash & Pikachu manga.