The Dark Entity Known as Nightmare is the secondary Antagonist of the story, while he may not be the main villain, he still is quite a huge Threat! He is the embodiment of Darkness itself, with the intent on causing chaos where ever he goes. He has tormented Lucid and Vivid's Family (consisting of a clan of Dream Catchers) for years and he won't stop until lucid's family bloodline is destroyed entirely. In fact, all he desires is destroying every single Dream Catcher in existence so nothing can stand in his way of pure tribulation and chaos across the world.

For his voice I'm looking for someone to match his nature and personality. a dark, vile and powerful being with a low pitch. as long as you match his deep tone of voice as well as his appearance then i'll accept it. ideally like David Lodge's portrayal of Igor/malevolent god/Yaldabaoth from Persona 5. (Here is a reference to his voice)

David Lodge (Igor):https://youtu.be/9O_7-UCW9Pk