The Avatar is the main (player) character in the Ultima series of games. He (or she) is not an embodiment of a god (as in the traditional meaning of the term Avatar), but of a set of ethic guidelines called the Virtues. In the game, you must balance your actions and behave according to the Virtues, for it is all that will set you apart from your enemies.

The Avatar was first known as the Stranger in Ultima, when he (or she) defeated Mondain. In the fourth game, your quest is to retrieve the Codex of Ultimate Wisdom and the Stranger becomes the embodiement of the Virtues, aka Avatar.

In the 7th (parts 1 and 2), 8th and 9th games, the Avatar battled the Guardian.