1. A method for providing an avatar, the method comprising: providing, using an avatar providing server, the avatar to a user connected to a network through a user terminal in response to a request by the user; storing information associated with the avatar provided to the user; receiving, at a service providing server, the information associated with the avatar provided by the avatar providing server to the user, the information associated with the avatar comprising information on a plurality of exposed units configuring the avatar; determining, using the service providing server, a location of the user in the network; selecting, using the service providing server, information on exposed units of the avatar of the user depending on the user's location in the network; transmitting files for a first exposed unit and a second exposed unit if the determining determines a first location and transmitting a file for the first exposed unit, without transmitting a file for the second exposed unit, if the determining determines a second location; generating, using the service providing server, a service page on which the avatar having an exposed unit is displayed based on the transmitted file or files; and transmitting the service page to the user terminal, wherein the location of the user is a page displaying the avatar with an identity (ID) code of the user, wherein the user's access to the first location requires authentication via a first authenticator and the user's access to the second location requires authentication via a second authenticator, wherein the first exposed unit corresponds to a head of the avatar and the second exposed unit corresponds to parts of the avatar other than the head, and wherein transmitting the service page comprises: transmitting, to the user terminal, the service page on which the first exposed unit and the second exposed unit of the avatar are displayed if a web address associated with the user corresponds to a first page; and transmitting, to the user terminal, the service page on which the first exposed unit of the avatar is displayed, without displaying the second exposed unit, if the web address associated with the user corresponds to a second page.