An experiment was conducted on social agents, which support networked community to communicate about social issues. Selected shape of social agents is animal-like ¡Çcharacter agent¡Ç which expresses the emotion by gesture and synthesized voice. The roles of the character agents are ¡Çavatar¡Ç and ¡Çnavigator¡Ç. ¡ÇAvatar¡Ç is the substitute of a user and ¡Çnavigator¡Ç is a supporter of each user. A communication system was developed implementing designed agents, named ¡ÇSym-bio Community System¡Ç. This experiment was conducted for discussion on social issues. As a result, we found out that participants had the image of ¡Çaffinity¡Ç for an avatar and ¡Çusefulness¡Ç for a navigator. And, the image of ¡Çusefulness¡Ç for a navigator by participants correlated positively with the evaluation for the networked community by participants.