Mitsuji

Fernando is a character of the day who appeared in Tricks of the Trade (EP148).

He was a very capable Tauros Trainer, and was first seen managing his fifth consecutive victory in the Tauros competition of the Pokémon Swap Meet in Palmpona, an unprecedented feat. In his next appearance, he had won his tenth straight battle and looked set to retire undefeated before Ash and his Tauros arrived and successfully took the title away from him.

Some time after the battle, Fernando met up with Ash during the Swap Meet with some other Trainers, informing him that his Tauros was great. He even offered to trade his Nidoqueen for Ash's Tauros. Ash declined this offer, however, much to Fernando's disbelief.

(Source: Bulbapedia)