Marcellus
Marcellus (Japanese: Hichiro) is a character of the day from the Pokémon anime. He appeared in Octillery the Outcast.
Shortly before the Whirl Cup Competition began, Marcellus approached Ash and his friends, requesting a battle. He wanted his Remoraid to evolve into an Octillery so he could have a strong Pokémon for the competition. Misty agreed to a battle, saying she wanted to train her Corsola before the battle. She ended up losing the battle, and Marcellus's Remoraid evolved at the battle's end.
The next day, after the preliminary qualifying rounds, Ash and the others found Marcellus. He said that he lost the preliminaries and was now out of the competition. That night, he explained to them the reason why he lost; Marcellus owned a tank full of Remoraid, who were treating his newly-evolved Octillery differently. Marcellus was so upset about this, he couldn't concentrate on the battle.
Team Rocket came in to steal all of the Remoraid, but with the help of Octillery, Marcellus and the others were able to catch up to and save the Remoraid. After saving Octillery from falling, all of the other Remoraid evolved into Octillery.