Expressing emotions with a robot that could have any shape and abilities requires to study the expressive power of different interaction channels, and the different features involved in emotional expression: shape, movement, colors, sound, light, timing, input channels, etc.
On this way we have developed, among others, the robots listed below. Some of them exploit emotion expression in their job (robots for people with disabilities, artist robots) others are just experiments to evaluate the basic components of emotion expression.