Context: Sarah Williams (Jennifer Connelly) was a teenager with a large imagination and love for fantasy stories, so much so that she enacted her favorite storybook, the Labyrinth, whenever she could. She happened to have been pretending that she was the heroine in her story while wandering in the park near her house when the clock on the near by city hall building struck, informing her it was 7pm. She realized she was an hour late and needed to get home to watch her baby stepbrother, Toby (Toby Froud). After arguing with her stepmother about her tardiness and feeling ignored by her father, Sarah was left alone with her fussy infant brother. Angered that her stepmother had given her brother one of her favorite teddy bears, a tattered toy called Lancelot, Sarah shouted into the air for someone to take her away from 'this awful place.' To get Toby to stop crying, she told him the story of how the Goblin King was in love with the girl who was 'forced to stay at home with the baby' and that he had 'given her certain powers.' But Sarah in no way believed this story could be real.In anger that the child wouldn't stop crying, Sarah did call for the goblins to take her brother. They took Toby away and Jareth (David Bowie), the King of the Goblins, gave her an option; she could take her dreams or spend 13 hours in his kingdom, an ever-changing maze called the Labyrinth. If she was able to get to the castle at the center within the specified time, her brother would be spared from becoming a goblin. Sarah was resolved to save her brother and the king left her to do her task.She immediately met an ancient looking dwarf with a feisty attitude who showed her how to enter the Labyrinth. His name was Hoggle (voice Brian Henson) and he told her not to take anything for granted in that place; she didn't seem to find him very helpful and basically told him to leave. However, eventually she got herself stuck in an oubliette, and the one sent by the Goblin King to 'rescue' her was Hoggle.But Hoggle was beginning to like Sarah and against the orders he was given to send her back to the beginning of the Labyrinth, having her start all over again, and therefore be late, he made the choice to help her get to the center and reach her brother. This did not bode well with Jareth, who in umbrage at Sarah's haughty attitude took three hours of her time away and threatened to send Hoggle to the most horrible place known in the Labyrinth for his betrayal, a stinky land of slimy mud called the Bog of Eternal Stench. Then Jareth turned to Sarah and asked her how she was enjoying his Labyrinth. When she flippantly said it was a 'piece of cake,' the king sent a machine covered in spinning knives after her and Hoggle, then disappeared. They were able to escape, yet Hoggle got scared by the sound of a howling creature and said he was a friend to no one but himself, leaving Sarah to fend for herself.Sarah forced herself not to be afraid, remembering she had been told 'things aren't always what they seem in this place.' She found Ludo, a giant furry beast and a gentle creature despite his massive size, who became her friend when she saved him from being tortured by a bunch of goblins. But she became separated from Ludo too and found herself in a strange forest where she met the Firies, creatures that were able to dismember themselves and take off their heads. They tried to take off her head, which of course didn't work, but they didn't stop trying to mutilate her, so she threw their heads away. Hoggle came to her rescue, but she didn't know that the Goblin King had threatened that if she ever kissed him, he would immediately be sent to the Bog. As soon as her lips touched the dwarf's bald head in a kiss of gratitude for being rescued, the stones beneath them shook and they fell to the Bog. Thankfully they did 
 Question: What are the creatures with detachable body parts called that assault Sarah?
Output: firies