Cal

Cal is a Dungeon Core with an affinity for Pure Essence, and the main protagonist of the series. He is well-known among the races as a dungeon who has 100% pure essence, meaning that anyone can cultivate there, no matter what their essence affinity.

Cal also shares a soul with Dale, the other main protagonist, as a result of a complex series of events involving a portal made from chaos essence that took them back in time where a necromancer took out Dale's core and transformed it into a dungeon core, then died after throwing it behind him. Cal only has faint recollections of this, until he steals the memories from himself.