When Nightmare Bliss was a colt and his home life was on a downward track, he made an imaginary friend. They cried together, laughed together, and Amicus was always there for his friend.
Amicus slowly manifested from Nightmare’s magic and thoughts into a real living being. Sometimes the little creature fades, becoming nonexistent for a few minutes, and won’t remember anything from those times once they return.
When Nightmare Bliss goes to steal away children in the night, Amicus will play with the children and keep them happy and positive rather than scared.