1. A robot apparatus having a behavioral model for outputting a pre-set behavior command or a feeling model for outputting the feeling information, said robot apparatus comprising: detection means for detecting extraneous states; storage means for storing data; write control means for writing pre-set data in said storage means based on said pre-set behavior command or said feeling information; re-arraying means for re-arraying said pre-set data written in said storage means depending on said pre-set behavior command or feeling information associated with said pre-set data; and a plurality of legs for walking.