Avatar

Avatar is another word for your character in MMORPG games.

Inspiration
In Hinduism, an avatar is a deliberate descent of a deity to earth, or a descent of the Supreme Being (i.e., Vishnu for Vaishnavites), and is mostly translated into English as "incarnation", but more accurately as "appearance" or "manifestation".

This use of the term Avatar in games refers to the fact that player enter the game world in the form of a character that represents themselves.