An avatar is a computer user's representation of himself/herself or alter ego, whether in the form of a three-dimensional model used in computer games, a two-dimensional icon (picture) used on Internet forums and other communities, or a text construct found on early systems such as MUDs. It is an “object” representing the embodiment of the user. The term "avatar" can also refer to the personality connected with the screen name, or handle, of an Internet user.

In English, the word has come to mean "an embodiment, a bodily manifestation of the Divine." However, the Sanskrit word Avatara means "incarnation." The term is used primarily in Hindu texts. For example, Krishna is the eighth avatar (incarnation) of Vishnu the Preserver, whom many Hindus worship as God. The Dasavatara are ten particular "great" incarnations of Vishnu. 

 

Within a three-dimensional virtual world, the range of personalization of personal avatars is extremely wide. The avatar is the user's digital identity, a unique self-representation that allows the user to be recognized by the rest of the digital world. But even more. Avatars enable users to portray an image of themselves and their personalities "at a glance", allowing personal expression through the customization of avatar apparel, accessories, and animations. An avatar's image reflects the user's values and traits.