Cal is a Dungeon Hearth, a soul forced into a magical stone against his will. After several years of only instinctive living he was able to regain his sentience which allowed him to form new memories again and slowly start growing a dungeon around himself. With help from a small friend Cal learned to create monsters and traps and how to use treasure to lure in brave adventures to eat so he can grow in power and size.
Source: A Fictional Universe
