Albert has been working as a prison guard for a noble's castle for almost 14 years. He had seen all kinds of prisoners come and go.
The most common prisoners were usually just thugs and drunkards, your usual riff raff. They were locked up on the 1st layer of the underground prison. The ones who had more heinous crimes were usually locked up farther inside, with a thicker gate separating them from the common criminals.
The crimes of the people that were locked up in the inner cells were crimes deserving of death. War crimes, r*ping, murder of one's family, making a mockery of nobility- these were some of the crimes that places one in the inner cells.
And beneath the cells of these prisoners, was another cell separated from the rest. Never allowed to see light, reserved only to threats which the castle has a hard time disposing of, either because of politics… or because they simply can't. But mostly, it was for both reasons.
"Had fun talking to the beast?"