The present invention relates a system and method for providing an avatar with variable appearance. When a user is connected through a network, information on the avatar provided to the user is collected. The avatar has at least two exposed units. The user's location on the network is determined, at least one exposed unit is selected from among the plurality of exposed units according to the determined location, and an avatar for displaying the selected exposed unit is generated to the user. The exposed units configuring the avatar are respectively modified according to the user's selection. Therefore, the avatar can be easily displayed on any place on the Internet by controlling the exposed units of the avatar depending on the user's location on the network. Further, the user can combine and modify the avatar in various ways by respectively controlling the exposed units.