Pokémon producer Junichi Masuda recently discussed the endgame content of Pokémon: Let's Go, Pikachu and Pokémon: Let's Go, Eevee, including battles with elite challengers called Master Trainers. These Master Trainers are each experts in one specific type of Pokémon, and you can claim their titles by defeating them. Masuda's comments left us with a lot of questions, but today a new trailer dropped that answers them all.
As the trailer shows, these Master Trainers won't all be localized in a single battle hall. Instead, they'll span all over the Kanto region, presumably only appearing after you've defeated the Elite Four and earned your place as Champion. They're easily identifiable based on their matching red outfits.
Each battle with a Master Trainer will be one Pokémon vs one Pokémon of the same type. Your opponents will be strong, and they may carry surprising moves to catch you off guard. Based on the footage we've seen, it appears Master Trainers carry Pokémon at level 75. Can you travel through Kanto and defeat them all?