for most of the trading card game series they sold. This set, containing 130 cards, replaced the previous Base Set, and all energy cards printed between Base Set 2's release and the Gym Heroes set were printed as base set 2 cards. It is identified by the symbol of a Pokéball with the number 2 running through it. Team Rocket Team Rocket, released in April 2000, is the 5th set of cards in the Pokémon Trading Card Game. The title refers to a criminal organization from the video game Pokémon Red, Blue, and Yellow, and also features the trio of Rockets known as Jessie, James and Meowth who relentlessly follow the protagonists in the anime. Its symbol is the R, which is the Team Rocket organization's symbol and can be seen on practically everything that comes from them. This set introduced the Dark Pokémon, Pokémon corrupted and controlled by the Team Rocket organization. After the release of this set, Dark Pokémon would not show a strong presence until the set's sequel released four years later, Team Rocket Returns. This is also the first set to include a card exclusive to the English-language version, though it was eventually released for the Japanese counterpart, as well. As part of a promotion, an American-only Dark Raichu can be found in this set, though it is the rarest card, as a "secret" card that numbered above the regular set number: "83/82". The card was also available in Australian sets. Gym Heroes Gym Heroes, released on August 14, 2000, is the 6th set of 132 cards in the Pokémon Trading Card Game. Its symbol is an amphitheater with a black stage and white tiers. Its name comes from the Gym Leaders it focuses around and how these first four Gym Leaders have relatively optimistic and carefree personalities compared to those featured in Gym Challenge. This set also introduced a card layout change, eliminating the flavor text and stacking the weakness/resistance/level to fit the Gym Leader's headshot/badge. This is the first set to have Owner's Pokémon, the owners being the Gym Leaders of the various Pokémon Gyms around Kanto. While Sabrina and Blaine are also represented in this set, the most attention is paid to the first four met in the video games: Brock, Misty, Lt. Surge, and Erika. Each of their Pokémon reflects their favorite Pokémon types, as well as Pokémon they have been seen