An "avatar" is a virtual representation or character that people use online to represent themselves. It is like a digital identity that can be customized to look different from their real selves. Full definition
Do you think people are incapable of experiencing the story of someone that isn't a direct avatar of themselves and enjoying it? (n4g.com)
Right now we're planning a standard player avatar for multiplayer, and we hadn't anticipated any character creation for single - player. (kickstarter.com)
Whichever team who has the tallest avatar in the end wins. (techtimes.com)