"Avatar" is a Sanskrit word that usually implies a deliberate descent from higher spiritual realms to lower realms of existence for special purposes. It is often translated into English as "incarnation", meaning the physical incarnation of a divine or higher power. In the modern world the term has picked up a number of other meanings, and is the namesake for many fictional works. Its broadest definition is "some sort of remotely controlled entity which is present in the role of its controller"note . Naturally, that all means there are a lot of different works that use "Avatar" in their names:

On top of that, there are tropes: