Methods, systems, and computer-readable media for creating and using customized avatar instances to reflect current user states are disclosed. In various implementations, the user states can be defined using trigger events based on user-entered textual data, emoticons, or states of the device being used. For each user state, a customized avatar instance having a facial expression, body language, accessories, clothing items, and/or a presentation scheme reflective of the user state can be generated. When one or more trigger events indicating occurrence of a particular user state are detected on the device, the avatar presented on the device is updated with the customized avatar instance associated with the particular user state.