The Angel In Hell.

The bird has a single eye on its head that is locked onto him right now. It can see him and it is scrutinizing him just as he is observing it. 

The bird asked, "What are you?"

Legion-7 didn't answer. The bird was first surprised by the contact and curious about his existence. Then the bird became shocked. It said with excitement, "You are an immortal soul. I must have you."

Then the gigantic and angelic white bird began to move. It spread itself out into something like a peacock as it shot forward. The expansion of its wings made the already massive bird balloon in size. It flapped its 6 pairs of feathered wings to propel itself. It was moving in the direction of the thread connected to the red soul fragment. 

The bird said to him earnestly, "Don't try to run. Escape is futile and resistance is hopeless. I will have you and we will become one. Together we will achieve greatness."