Step into the peculiar world of Pokémon Card Game's "Fourth Booster Pack: Team Rocket," released in the mystical year of 1997. Delightfully deviant, this expansion brought forth the nefarious antics of Team Rocket, adding a deliciously dark twist to the game. Behold, for it was here that the concept of "Dark Pokémon" first graced our decks, with creatures cast in an eerie light that would make even the bravest trainer tremble.