Abstract: A robot toy comprises a first light source emitting light of at least two colors simultaneously or individually, five or more second light sources arranged around the first light source, a memory for storing at least two types of emotion parameters constituting emotion, and a control means for increasing/decreasing the value of emotion parameters based on an external operation input. The control means controls the first and second light sources to emit light in an emission pattern corresponding to a combination of the values of emotion parameters, thus realizing an inexpensive robot toy capable of effectively representing emotion.