In this chapter we overview humanoid robotic research as another thread of ECA research. This chapter consists of two parts: In the first half, we overview the historical research on creating communicative functions for humanoid robots. In these sections, we see how research on realizing a human interface for a humanoid robot has begun and developed, by tracing some very early humanoid robotic research done in 1970. In the later half, we try to survey recent research related to this topic. In these sections, we will have a brief overview of researches, and also, through the process of reviewing, we try to make clear the characteristics of using robots in the ECA research.