Swordsmen by the name of Zelban have appeared several times throughout history. This particular one took part in the great battle with the gods. It's said the Zelbans before him preferred to fight alone, but he was different and instead fought alongside his comrades. There are many theories for why he did so, but a major document has him recorded as saying, "I didn't plan to fight with them. I simply got caught up in the same battle as them."