The Isolated One
Someone who has fallen down a rabbit hole and reached the bitter end. This can be a long process, or extremely quick.
The Alien feeds like the others, but is fed upon as well.
One whose vitality is devoted to the Internet and has lost sight of reality. The Future Human who is no longer creative and has lost all potential.
The Isolated One.
(Art from H.G. Wells' Man of the Year Million)