Trivia: At the end of the film, the Withered Lover is standing on the place where the Torso sat. Both of these ghosts were rather harmless, and the Torso, while described as dangerous, never attacked anyone, including Cyrus, and walked to his head near Bobby. The only other ghost seen that is more or less harmless is the First Born Son, who is more of a taunter and prankster. This ghost died a quick death, being shot in the head by an arrow by another kid accidentally.
Trivia: While the Withered Lover is stated to be proactive for the side of good, two other ghosts are never seen actually attacking or scaring someone. The First Born Son is more of a taunter and prankster, though the Torso seems to be more or less harmless as he doesn't even hurt Cyrus. The Dire Mother is also seen as harmless by herself, but she is accompanied by her disabled son Harold who carries an axe for protection.
Trivia: The only film role of Shawna Loyer, who portrays the "Angry Princess." Because of the character's constant nudity, and the role being Loyer's only credited on-screen performance, for many years, it was believed that Loyer was actually a pornographic actress working under a pseudonym. This rumor was further fueled by the later production of "13 Erotic Ghosts," a porn parody of the film, as people speculated Loyer was also one of the actresses who appeared in it. The rumors have since been disproved. Loyer is not a porn-star working under a pseudonym, nor did she appear in the porn parody.
Trivia: The lawyer Ben being killed after grabbing a suitcase of money is a bit of a callback to the original 1960 film. In that movie, the character Benjamin the lawyer is actually the main villain, and his motivation is that he's trying to find a hidden stash of cash inside the haunted house. He too meets a dark fate at the hands of supernatural forces after discovering the money.
Answer: They all have the potential for danger, however some of them are not dangerous. I would say the Torso is not a murderous spirit, though potentially he could be one.