We are currently promoting a project to develop (physical or virtual) avatar technology and to create a society where everyone can engage in various activities as they wish, beyond physical constraints, by using avatars. We are particularly concerned with enriching our communications, interactions, and relationships through avatars. However, this aim cannot be achieved by technology alone. We have to consider the ELSI (ethical, legal and social issues) concerning avatars as well. In this workshop, the speakers will introduce some of our technologies and then raise ethical and legal questions concerning avatars. Then we would like to discuss these issues with all the participants.