Youshichi

Roland is a character of the day who appeared in An Elite Coverup! and a relative of the Sinnoh Elite Four member Bertha.

Roland gave his Magby to a disguised Team Rocket for them to raise and evolve it into a Magmar, unaware of their true intentions. Afterward, he met Ash and his friends and became attracted to his Pikachu, which Roland later played with in a park.

Later, with the help of his new friends—as well as Bertha—Roland was able to track down Team Rocket and be reunited with his Magby. With Bertha's encouragement, Roland had his Magby deliver the final blow to defeat Team Rocket.

(Source: Bulbapedia)