Caseus the Cheese, our main character in this story, is a good-willed character who inherited a fortune from his mother, Casea. He enjoys visiting bars and hanging out in his villa.
Oliver the lovable possum is a good friend and an enthusiastic adventurer. He lives in an insula and was a childhood friend with Garum, before he turned sour.
Once an innocent, kind bowl of fish sauce, Garum had his evilness thrust upon him in the form of a desire for revenge, when Caseus' father was framed for killing Garum's father. Garum, of course, believed such accusations, and swore to avenge his father's death when he heard that Caseus had come back from the dead. The two have been arch-nemeses ever since.
Caro is the mysterious true villain of the story, the killer of Garum's father and the person who framed Caseus' father for murder. His involvement in the plot is soon to be discovered by Garum and Caseus...