The official Pokémon Masters website has launched and it gives new information about the story, the region and the trainers that players will face in this new mobile game for Android and iOS.

Story

Your Adventure on the Island of Pasio
Pasio is an artificial island where each Trainer has one trusted Pokémon partner. Together, the Trainer and their Pokémon are known as a sync pair, and they participate in 3-on-3 team battles.

3-on-3 Team Battles

The Pokémon Masters League (PML) is a tournment held on Pasio. It features Gym Leaders, Elite Four members, Champions, and other all-stars from every region, who come together to form teams and participate in intense, 3-on-3 team battles.

To participate in the PML, players must battle PML Leaders all over Pasio to obtain five badges. You, as the main character, will team up with Pikachu to form a sync pair, sharing in many adventures as you strive to qualify for the PML.

Character Profiles

Characters profiles
	Main Character and Pikachu You're the main character. You'll set out on an adventurous journey on the artificial island of Pasio with Pikachu as your partner Pokémon.
	Brock and Onix Known as the rock-solid Pokémon Trainer, he is a reliable Gym Leader who watches over and supports younger Trainers. He goes along with you on your adventure, acting as your coach.
	Misty and Starmie A Gym Leader known as the Tomboyish Mermaid, she has an upbeat personality but also acts tough and takes rules very seriously. As a more experienced Trainer, she goes along with you on your adventure.
	Rosa and Snivy This high-spirited young lady likes to stand out and has a strong sense of justice. Her dream is to have many battles with Trainers all over the world.
	Red and Charizard The silent type, this legendary, awesome Pokémon Trainer hardly talks at all. His best friend, Blue, is also his rival. Is there something different about his clothes?
	Blue and Pidgeot This highly skilled, powerhouse Trainer prominent in Kanto is the grandson of the famous Professor Oak. Red is both his lifelong rival and his best friend.
	Cynthia and Garchomp This Champion of Sinnoh is an archeologist who researches the history and mythology of Pokémon. Her deep love for Pokémon sent her on an adventure when she was young.
	Iris and Haxorus This lifely young Trainer's family lives among Dragon Pokémon. Despite her youth, her skills in battle have made her a Champion.
	Clair and Kingdra She is a proud, confident Gym Leader who uses Dragon-type Pokémon. Her cousin Lance is also a Dragon-type Pokémon user.
	Brendan and Treecko His goal is to be like his dad, Norman - a Gym Leader he really looks up to. He is a bit mischievous, but he is serious about Pokémon battles.
	Flannery and Torkoal A Gym Leader with a fiery, brave personality, she can be a bit too serious and sometimes tries too hard to conduct herself properly.
	Barry and Piplup An incredibly impetuous, high-spirited young man who runs straight for what he wants without any hesitation, he has an earnest passion for Pokémon.
	Korrina and Lucario A lively Gym Leader who speeds around on roller skates, she is known as the Mega Evolution successor in her native Kalos.
	Acerola and Palossand Rumored to be descended from an ancient Alolan dynasty, this Ghost-type Pokémon user serves as one of the Alola region's Elite Four.
	Thorton and Bronzong He analyzes his opponents, and his knowledge of and skill with any Pokémon are the real deal. As Factory Head, he battles challengers.

Source: https://pokemonmasters-game.com/