Game Freak

Game Freak (officially capitalized GAME FREAK) is a Japanese video game company, who is most known for developing the popular Pokémon series, and since the point creating the first Pokémon games, became fully a second-party company for Nintendo. Before the Pokémon series, they worked for other companies such as Sony and Sega. They also made some Mario games, including Yoshi and Mario & Wario, which was only released in Japan.