Entity 303

Entity 303 is an antagonist in the series. He appears just as entity 303 is normally decipted, and has the power to corrupt people’s dreams. He can also create black hole like voids in the ground. He is a skilled swordsman, and not much is known about his background, save for a story of how he turned to evil. He is the leader of the entity collective.

This character's life status:

books 1-5: alive

6-7: deceased

8-9 onward: alive