Template:InfoboxThe Nightmare Man was a Vishklar from the Seretti dimension who terrorizes humans in their dreams.
The Nightmare Man was malevolent and cruel. He demonstrated sadism, taunting Luke that all which was happening was Luke's fault.
Of course, one personality flaw proved to be his downfall: arrogance. Underestimating Luke and his friends allowed them to defeated him (TV: The Nightmare Man).