Brock

Brock is the Gym Leader of Pewter City's Gym, known officially as the Pewter Gym. He gives the Boulder Badge to Trainers who defeat him in battle. He specializes in Rock-type Pokémon.

He is one of the few truly serious professional Pokémon Trainers in the Pewter City area, and many people respect and admire him. He is quite proud of his rock-hard willpower, and uses Rock-type Pokémon to complement this. He rarely laughs or drops his serious demeanor, but when he does, he finds it hard to stop. In his free time, he likes to dig for Fossils in Mt. Moon. In addition to the Boulder Badge, Brock gives out a TM for Rock Tomb.

A calm, eloquent and dignified young man, Brock is presented as both wise and experienced in the field of Pokémon. Brock mainly provides an advisory role to the other main characters of the anime, being several years older than the rest of them. His knowledge of Pokémon battles is great, causing him to often referee matches between Ash and others. Brock also fancies himself as something of a ladies' man, though each time he hits on someone he is either rejected outright; pulled away by Misty or Max; or, more recently, Poison Jabbed by his Croagunk.