Character Oracle is a GPT developed by Tsuyoshi Yonemoto that operates within the ChatGPT infrastructure. This unique tool offers a game that guesses characters based on questions asked to the user. The functioning of this tool starts with a welcome message prompting the user to select a language to kick-start the guessing game, offering both English and Japanese as options. The game progresses by inviting the user to think of a character, be it real, fictitious, or from any literary or entertainment source. Character Oracle then utilizes a series of questions to guess the character the user has in mind. This GPT uses its algorithmic capabilities to provide an interactive and engaging experience, guessing the selected characters accurately based on responses to the questions it asks. This could include prompting the user with questions such as whether the character is real or if the character possesses any specific powers. The tool requires a ChatGPT Plus subscription for users to be able to engage with it. The main purpose of Character Oracle is to provide a fun and interactive game building on the cutting-edge technology provided by OpenAI's GPT environment. As it operates within the framework of ChatGPT, users must log in in order to play with Character Oracle.