Piers

Piers (JP: ネズ) is the predecessor of the current Gym Leader and a user of -type Pokémon. He is also presumably the leader of Team Yell.

Personality
Piers normally seems to be quite a glum and lethargic-looking person, but he's actually a nice person who know who to look after others. He cares for his sister Marnie and acknowledges Marnie's talents.

Although he once took on his duties as a Gym Leader, Piers actually prefers pursuing in song-writing and singing on stage, and always performs passionately.

Guide Book
Spikemuth lacks a Power Spot that would allow Pokémon to Dynamax, and thus not many fans come to visit the town. Piers feels responsible for allowing his town to fall into obscurity and dilapidation. Once in battle, Piers tends to get riled up and will often reveal his strategy early on, but he has the strength and skill to triumph regardless. However, his true passions are singing and song writing, and his talents in these fields are well-known. As such, he currently hopes that his younger sister will take over as Gym Leader.

Here are some words from Piers when he first became the Gym Leader of Spikemuth. "Uh... ... ... The name's Piers. It's too bad we can't Dynamax our Pokémon in Spikemuth, but you could say we have a more authentic style of Pokémon battles. And I plan on showin' that off. And well... I have a younger sister, and she's got way more talent than me. But until she's old enough to become Gym Leader, I'll keep rockin' with my crew and make sure Spikemuth stays lively!"

Trivia

 * He is the first Dark-type Gym Leader before his sister Marnie succeeds his title.