Nightmare (ナイトメア, Naitomea) is the main antagonist of the Soul series.

The first character to act as Soul Edge's host and become the Azure Knight, was Siegfried.


Soul Blade


Nightmare, known as Siegfried! in Soul Edge (Soul Blade).

Even though Nightmare originally debuted in Soulcalibur, there was a "prototype" of his character in Soul Blade. An extra character named Siegfried! was added as an unlockable character. Siegfried! was an alternate version of normal Siegfried taken from his no-input ending, in which he is consumed by Soul Edge. This early version was very different from the current Nightmare, having crimson-red armor and a more flesh-like design with no mutated Nightmare Arm. He has no story nor ending, and only used Siegfried's Soul Edge without effects. Oddly, he uses the same voice actor as Siegfried.


In Soulcalibur, the concept was expanded and turned into an official character, though with changes to the design. His red armour was changed to a dark blue armor and its design turned more metallic instead of fleshy. This was also the first appearance of the Nightmare Arm. Siegfried's body was slowly being mutated by the sword's terrible power, causing his right arm to morph into a hideous claw. Despite the Nightmare Arm only having three large fingers, it didn't seem to hinder his combat abilities at all. He now wields his own version of Soul Edge, sporting a single eye on its blade, something that would become the trademark of the various versions of the weapon, and the creations made from it, such as Charade.

Nightmare was a starting character whose style resembled Siegfried's former moveset. Siegfried was later added to the cast as a time-release character and inherited the same style with minor changes. Nightmare's profile on the game explained how Siegfried obtained Soul Edge after a fierce fight against its former owner, the dread pirate Cervantes de Leon and the fiery demon that spawned within it afterward, Inferno. After that, the sword spoke to him, promising the resurrection of his dead father if he helped it gather souls. Unaware that it was a trick to restore the sword's power, Siegfried agreed and started a killing spree which eventually made him weak to Soul Edge's will. Nightmare was born soon after.

Soulcalibur II

Nightmare's incarnation in Soulcalibur II remains mostly the same, with minor upgrades to his fighting style, mainly on his stance. As his and other character's profiles explain, he formed a group "Schwarzstrom" with Astaroth, Isabella "Ivy" Valentine and Aeon Calcos (the Lizardman) in an attempt to speed the gathering of souls and restoration of the sword's power. But during the ritual to restore Soul Edge, Ostrheinsburg Castle was assaulted by Kilik, Maxi, and Chai Xianghua. With his allies either defeated or missing, Nightmare confronted Kilik and Xianghua and was ultimately defeated, later falling into the collapsing void where they fought. After waking up, Siegfried, apparently free, regained his senses and tried to distance himself from the world to atone for the sins he committed as Nightmare. However, the sword slowly regained control over the young man and eventually Nightmare resurfaced to start another massacre on Europe. In this game, Nightmare is a starting character, while Siegfried turned into a third costume option for him. In his second costume option, it can be seen that most of the right side of Siegfried's chest has been corrupted in a similar manner to his arm, and his right eye has changed to a golden color.

Soulcalibur: Unbreakable Soul

Note: Non-Canon material starts here

Nightmare is found by the player and Cassandra at Ostrheinsburg Castle. Sensing the fragments of Soul Edge within the player, he fights him/her for them. But he is defeated and turned back into Siegfried. Meanwhile, the player continues the journey with Cassandra to find more fragments, as he/she feels that there are still fragments of Soul Edge scattered throughout the world.

Note: Non-Canon material ends here



The time had come... with countless souls stolen from brave warriors, the evil sword now transformed into an apparition of his father.

Frederick: Siegfried, my dear son...

Siegfried: F...Father...!

Frederick: Pierce me with this sword.

Siegfried: What!?

Frederick: I'm nothing more than an illusion. Reflect back upon your sins and repent.

Standing before his father's grave, he whispered to himself, "Is redemption possible?" And so he embarked upon a journey with atonement as his cross to bear, embracing within his heart the last wishes of his father.

Soul Calibur 2 - Nightmare's Ending

Soul Calibur 2 - Nightmare's Ending

Soul Calibur II Nightmare's Ending

Soulcalibur II

"Resist the evil presence!" The dormant soul within him awakened. Sanity regained, he took his sword in hand and vowed to never sleep again as he wandered the lands. Eventually, he came upon a crevasse that ran deep into the earth and cast the sword into its dark abyss. He then destroyed the path leading to the chasm and became its guardian for eternity. . .


Theme Music


  • "In The Name of Father"

Soulcalibur II

  • "Raise Thy Sword"



  • "There's no turning back now!"
  • "Blood... darkness... come unto me!"
  • "I shall reclaim my soul!"
  • "My sword, give me strength!"
  • "Souls, come unto me!"
  • "You ask for more?!"
  • "More souls!"
  • "My sword, you ask for more..."
  • "I'm through with you!"
  • "Waaaryah!"
  • "Take this!"
  • "I'm through with you!"
  • "More!"

Soulcalibur II

  • "Offer your soul!"
  • "Taste fear!"
  • "Sword, give me strength!"
  • "I will show you a nightmare."
  • "Do you want to die that badly?"
  • "There's no turning back."
  • "Massacre!"
  • "Bloodbath!"
  • "Souls, give me strength!"
  • "Souls, come unto me!"
  • "My thirst is endless!"
  • "I will show you the greatest nightmare."
  • "Blood, darkness, come unto me!"
  • "I still need more souls!"
  • "Hurry, give me the next soul!"
  • "Why?!"
  • "This is it!"
  • "This is the end!"
  • "Go away!"
  • "Soon, I will be revived!"
  • "Offer your soul!"
  • "You gotta be kidding?!"
  • "Not yet!"
  • "How?!"
  • "I've been waiting for this day for too long!"
  • "Your insanity ... show it to me!"
  • "Yes, this is it!"
  • "You're pathetic soul! Die!"
  • "This is..."
  • "...the end!"
  • "Stay..."
  • "...down!"
  • "Hows..."
  • "...This!"
  • "Take..."
  • "...this!"
  • "Get out of my way!"
  • "You're mine!"
  • "There's more!"
  • "This is the end!"
  • "Come on come on come on!"
  • "Go away!"
  • "What's the matter?!"
  • "Souls!"
  • "Come unto me!"
  • "Shatter!"
  • "More!"
  • "Die!"
  • "Suffer!"
  • "This is it!"
  • "Give it up!"

Nightmare's servants

Former servants:


Soulcalibur Manga Comic

  • In Volume 1 (Act.4), Nightmare begins his rise upon his army of darkness (armies of Lizardmen and Astaroth) during the darkness ritual.
  • In Volume 4 (Act.24), Nightmare was defeated by Mitsurugi. After Mitsurugi was away, Nightmare was still alive and revived into half of Siegfried's body (just like the 2nd outfit from Soulcalibur II).
  • In Volume 5 (Act.30), Nightmare was completely recovered from the Darkness Ritual. His appearance is now based off his 2nd outfit from Soulcalibur.

Series' Appearances

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