These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: Ferriman, aka the literal "Ferryman" is an infernal accountant working for Hell to collect souls. He was a bastard even before he became a demon, as he was only given the job because he lived a gravely immoral life. He impersonates a human to trick people into committing mortal sins and kill themselves so he can steal their souls. He goads the crew on the Italian cruise liner the Graza to butcher everyone on board to get a crate of gold bars that he brought with him from a ship they salvaged. It turns into a complete massacre, with people being attacked all over the ship and cut open, poisoned, and machine gunned to death, including a child being hanged in her room. The instigators turn on each other after killing the passengers, and he kills the last one himself with a meathook. He traps the souls on the ship in fear and torment until he can send them all to Hell. He lures multiple salvage crews to the derelict cruise liner to fix the ship, tricks them into staying to get the gold, and then kills them all one by one. Not even his job explains his excessive sadism in killing people to steal their souls, as there's no hint that there are others like him or that it's standard procedure. Worse yet, the end of the film implies he's about to do it all over again.