Appearing in every game of the series, Nightmare has served as a recurring antagonist in contrast to the protagonist role played by Siegfried, as well as serving as Siegfried's archenemy. Ever since then, Nightmare has been the main antagonist and owner of the Soul Edge, and thus the objective of most other characters in the story. In the sequel Soulcalibur, he was given a name and featured as a central character. Nightmare first appeared in one of the possible endings for the Siegfried character in the game Soul Edge.
The evil alter-ego of Siegfried Schtauffen ( ジークフリート・シュタウフェン, Jīkufurīto Shutaufen ?), he later becomes an entity separated from Siegfried in Soulcalibur III. Nightmare ( ナイトメア, Naitomea ?) is a character in the Soul series of fighting games. Nobuyuki Hiyama, Fumihiko Tachiki ( SC3), Kōsei Hirota ( SCL, SCIV) Ted D' Agostino ( SCII), Patrick Ryan ( SC3, SCIV) Nightmare as he appears in Soulcalibur IIĪya Takemura ( Soulcalibur II-IV), Takuji Kawano ( Soulcalibur II-IV, Soulcalibur Legends)
