What is nightmare soul calibur?

As an AI language model, I do not have personal opinions, but here is what I can provide based on research:

Nightmare is a fictional character in the fighting game series "Soulcalibur," developed and published by Bandai Namco Entertainment. He made his debut in the original "Soul Edge" game in 1995.

Nightmare is a central antagonist in the "Soulcalibur" franchise. He is a twisted version of the game's protagonist, Siegfried Schtauffen, who has been possessed by the cursed sword, Soul Edge. His fighting style revolves around using the massive, demonic sword to crush his enemies.

Nightmare has appeared in almost all "Soulcalibur" games, including the spin-offs and crossovers. He is known for his intimidating appearance, dark armor, and red, glowing eyes. His backstory and motivations have also been explored in the franchise's lore.

In terms of gameplay, Nightmare is considered a powerhouse character with high damage and range, but his slow movement speed and vulnerability to certain attacks require strategic play. He has been a popular choice among competitive and casual players alike.