Soul Edge
"Soulcalibur VI" serves as a rebooted timeline after the event of "Soulcalibur V", immediately takes place at the beginning of the second "Soul" game's reboot storyline, the original "Soulcalibur", rather than the beginning of "SoulEdge". Shortly after becoming Nightmare, Siegfried slaughters thousands of innocents in an attempt to resurrect his father, with Soul Edge mimicking Frederick's voice to manipulate Siegfried. Nightmare is eventually defeated by Kilik and Xianghua. After the Azure Knight's defeat, Siegfried reawakens in a nearby forest wracked with guilt over his memories of his atrocities as Nightmare and his role in his father's death. After facing off against multiple people who want revenge on him for Nightmare's crimes, his soul is partially purified by Sophitia, giving him the motivation to take down Soul Edge for good. After hearing the voice of Soul Calibur cry for help, he grips Soul Edge and becomes Nightmare once more to prevent Soul Edge from consuming Soul Calibur. He then waits for his chance to properly regain control of his body once more. Despite knowing what Soul Edge has been doing with his body while his soul is resting at nighttime, Siegfried gains the knowledge of where Soul Edge and “his” servants held their hostages are, entrusting some fellow opposing warriors like a now Korean taoist swordsman Hwang Seong-Gyeong the locations.