The Darkness is a demonic entity that has been around since the beginning of time. When God created light, planets, people, and other things that interrupted the blank darkness of the universe, The Darkness was pissed. It began going to one human host after another like a parasite, letting each think that they were in control over it. Little did they know, that every time they use The Darkness' powers, it became more and more in control over them like a drug addiction.
The Darkness can't stand the light, literally or metaphorically. To use your darkness powers, you cannot be close to any active light sources. If The Darkness senses innocence or any type of goodness in someone, it will try to keep you away from them. This becomes especially prevalent when you begin to have flashbacks of Jenny and try to get her back.
The exceptionally talented voice actor, Mike Patton, plays the voice of the Darkness. His sinister voice will send chills down your spine and keep you at the edge of your seat.