Gym

The Gym series covers Japan’s Leaders’ Stadium (1998) and Challenge from the Darkness (1999) plus the English Gym Heroes and Gym Challenge of 2000. They are built around Owner’s Pokémon tied to Kanto’s Gym Leaders, such as Sabrina’s Gengar and Blaine’s Charizard, and in English, Gym Heroes introduced those and the first Stadium cards. English 1st Edition holos are the chase cards, and grade decides their value.