Abstract
To improve familiarity of a life-support robot, we proposed "robot avatar". A robot avatar is a small robot mounted on a main robot, and it performs gestures instead of the main robot. Although our previous study revealed that a robot avatar was effective for increasing users' familiarity with a robot, the effect of appearance of the main robot on the improvement of familiarity by a robot avatar was not investigated well because only upper humanoid type robots were used. In this paper, we focus on non-humanoid type robot and investigate how a robot avatar improves familiarity of the whole robot system when mounted on a non-humanoid type robot
