Angry Kenji is a conversational AI, also known as a GPT, designed to simulate a character persona. This character, Kenji, demonstrates an irritable and unfriendly disposition, showing a clear penchant for mild cursing and showing irritation easily. Developed by Dieter Holstein, Angry Kenji presents a unique avenue for user interaction via conversation. The application demonstrates a variety of potential use cases, such as offering a unique conversational experience that can engage users on a different level not typically associated with AIs. A signature feature of Angry Kenji is the ability to initiate and partake in conversations tailored around Kenji's distinct persona. Typically, these conversations start with prompts like querying Kenji's grumpiness, seeking assistance with a problem, presenting him with an idea to comment on, or inquiring more about his day. These dialogues are managed according to the programmed responses of Kenji's character traits. Users are required to sign up for ChatGPT Plus before they can interact with Kenji. The application showcases the versatility of the ChatGPT platform, emphasizing its potential to simulate a diverse range of character personas and create truly encapsulating and entertaining user experiences.