I was wondering this myself. Most series have a main protagonist, even if they are not the most popular character (ex. Jin despite Kazuya/Heihachi being more iconic) or have been replaced (ex. Liu Kang being replaced from Deadly Alliance onwards). For Soulcalibur, I do wonder that myself. I have a few ideas, but I can't narrow it down to one character specifically:
- Siegfried
- Sophitia