| Chase | |
 Art from Let's Go, Pikachu! and Let's Go, Eevee! | |
| Age | Unknown |
|---|---|
| Gender | Male |
| Eye color | Black |
| Hair color | Black |
| Hometown | Pallet Town |
| Region | Kanto |
| Relatives | Mom |
| Trainer class | Pokémon Trainer, player character |
| Generation | VII |
| Games | Let's Go, Pikachu! and Let's Go, Eevee! |
Chase is the male player character in Let's Go, Pikachu! and Let's Go, Eevee!. His female counterpart is Elaine, and is analogous to Red as he appears in Generation I and their remakes, FireRed and LeafGreen, along with Leaf as she appears in the latter two games.
Chase is a young boy from Pallet Town. His adventure begins one day when Professor Oak calls him and his friend Trace to his lab for a starter Pokémon. Chase picks a PikachuP or EeveeE , while Trace picks the opposite Pokémon. Oak also gives them each a Pokédex with which to record data on all known Pokémon in the Kanto region to fulfill Oak's dream of creating a full guide on all Pokémon in Kanto.
From here, Chase and Trace journey across Kanto, collecting Pokémon to build up their teams, and defeating each of the Gym Leaders in turn.
Chase also comes across a gang of Pokémon thieves, Team Rocket, several times through his journey. He first encounters them trying to steal fossils within Mount Moon. Then he encounters a member who is running the Nugget Bridge challenge to recruit for the organization on Route 24; and another lone member who has stolen a TM from a family in Cerulean City. Eventually, he uncovers a plot by Team Rocket, infiltrating their hideout beneath the Celadon Game Corner and encountering their boss, Giovanni. Defeating him and ousting Team Rocket from Celadon, Chase uses the Silph Scope that Giovanni leaves behind to battle Ghost-type Pokémon and save Mr. Fuji in the Pokémon Tower in Lavender Town, who is being held hostage by Jessie and James, two agents of Team Rocket. He soon journeys into Saffron City in the heart of Kanto to find it overrun by Team Rocket, who is attempting to take the recently invented Master Ball from the Silph Co. President, and defeats Giovanni again, ending the group's plots for the time being.
With seven Badges in hand, Chase encounters Giovanni for the final time—this time as the Leader of the Viridian Gym, his final obstacle before the Elite Four of Indigo Plateau. Chase defeats him in battle, earning his eighth and final Badge—the 
Earth Badge. Giovanni disbands Team Rocket, promising to go into solo training to become a better Trainer.
Making it through Victory Road and finally to Indigo Plateau, Chase challenges the Indigo League. First, he defeats the Elite Four and discovers, to his surprise, that Trace has defeated them before him and is therefore the Champion of Kanto. Chase defeats Trace in the final battle, becoming the Champion himself, but then continues his training, rather than staying at Indigo Plateau.
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