Their terrified reactions are completely reasonable. And see that it's Sorbet's body, frozen in a horrified expression in what is basically one big horrific art piece (that also must've take a lot of effort to get just right). Then they notice the body parts, and line them up. The amount of creative sadism involved in how Diavolo made his point clear to the remainder of La Squadra is both impressive and horrifying, as the team suddenly receive a whole bunch of frames with glass boxes filled with formaldehyde shortly after Formaggio discovered Gelato's body.Though it is possible Diavolo has to let Cioccolata torture people from time to time to keep him from rebelling, and in doing so, becoming even more dangerous.Even though Diavolo claims he's disgusted with Cioccolata, the fact that he still has him and Secco working for Passione and using them as means of intimidation (with Cioccolata being his personal chief torturer) makes him a complete Hypocrite. Instead, he got the most monstrous of his squad to do it, as a macabre warning of sorts, in the most gruesome and painful way possible.
If this additional scene is anything to go by, Diavolo didn't kill him with King Crimson in the manga either which would have potentially been a better fate as Diavolo doesn't torture or mess with his opponents.The creepy visuals, haunting music, Sorbet screaming and the horrified expressions of fellow La Squadra members just add more nightmarish undertones to this scene. It's especially unsettling seeing Cioccolata's silhouette lumbering around menacingly and the noticeably large and sharp blade he's holding makes him very reminiscent of Pyramid Head from Silent Hill 2. Not only do we see Sorbet's brutal death albeit a Shadow Discretion Shot, we see who butchered him up through an Early-Bird Cameo of Cioccolata - the most twisted of Diavolo's men, with Secco filming it all on a camera in the background while Sorbet was heavily restrained as he was being cut up, which amplifies the terror from the perspective of both him and Gelato in their final moments. Later, Diavolo sends formaldehyde-filled slabs containing bits of Sorbet to the Hitman Squad as a warning not to cross him again. Gelato was so horrified that he committed suicide by swallowing his cloth gag to spare himself from this torturous death. Diavolo caught both of them, tied up Gelato and made him watch him cut Sorbet into 36 separate pieces. He and his partner Gelato were dissatisfied by the small territory Diavolo had given them so they began to look into him. They grow back, a sign that this fat freak is clearly a Stand User. He is such a sloppy eater that he regularly eats his own fingers. A grotesque glutton who is both impossibly tall and wide by human standards and with a reverse-colored eye scheme. The less said about Polpo himself, the better.Its appearance is even more unsettling when you take note on how it's supposed to be remotely based on the black figure Geezer Butler saw and which inspired Black Sabbath's first album cover. Black Sabbath's appearance itself is pretty terrifying: tall, lanky, entirely dressed in black and having a Venetian carnival mask styled head.The poor janitor who had no idea what was going on was unfortunate enough to die for having his soul forcibly dragged out by the arrow. Made even more nightmarish when you take note on how Polpo utilizes its power: by impaling those who reignite the lighter and thus break the #1 rule of his entrance exam. Even when Giorno manages to escape its grasp and enter the sunlight, Black Sabbath just keeps on wandering back and forth aimlessly, waiting for him. A long-range autonomous Stand that has a Stand arrow within its mouth and is capable of moving within shadows at an incredible speed. Polpo's Black Sabbath is one of the most terrifying Stands in the entire series, let alone this part.