Systems and methods for providing artificial intelligence (AI) characters with changeable behavior are provided. An example method includes providing a plurality of behavioral types associated with an AI character model, where the plurality of behavioral types are associated with probabilities, and where the AI character model is configured to generate an AI character; randomly selecting, during interaction of the AI character, and based on the probabilities, a behavioral type from the plurality of behavioral types; and adjusting, based on the selected behavioral type, parameters associated with the AI character, thereby causing the AI character to follow the selected behavioral type.