A communication device including: an utterance acquisition part configured to acquire an utterance of a user to a character; an information acquisition part configured to acquire information different from the utterance; a voice generation part configured to generate a response voice to be emitted by the character based on a content of the utterance acquired by the utterance acquisition part; and an expression generation part configured to generate a response expression to be expressed by a face portion of the character based on the content of the utterance acquired by the utterance acquisition part, wherein when the information is acquired from the information acquisition part, the expression generation part generates the response expression using the information together with the content of the utterance, the response expression generated when the information is acquired being different from a response expression generated when the information is not acquired.