I'm not sure specifically as I haven't read this particular fanfiction. But the guide could be someone with special powers or knowledge. Maybe Hawkmoth gets help like strategic advice or some form of magical assistance to further his evil plans.
Since I don't have access to the 'hawkmoth gets healp from a guid fanfiction', I can only speculate. It's possible that the guide is a mysterious figure from Hawkmoth's past. The help could be related to his personal vendetta against the heroes. Maybe the guide gives Hawkmoth insights into the weaknesses of the heroes' Miraculous powers. This could allow Hawkmoth to create more devious plans to steal the Miraculouses and gain ultimate power in the Miraculous universe. Or perhaps the guide is helping Hawkmoth to manipulate events in the city to his advantage, like causing chaos that would distract the heroes while he makes his moves.
Well, without having read the fanfiction, it's difficult to say exactly. The guide might be a character who has an in - depth understanding of the Miraculous world. Hawkmoth could be getting help in terms of finding the Miraculouses. For example, the guide might know the hiding places of the Miraculouses or how to defeat the heroes who possess them. It could also be that the guide is providing Hawkmoth with new ways to use his own powers more effectively.
I'm not sure if it's popular. As for where to find it, you could try searching on major fanfiction websites like Archive of Our Own or Fanfiction.net.
Well, in some fanfictions, Hawkmoth might use false promises. He could promise Cat Noir something like the power to save a loved one in exchange for his help.
One consequence could be that he loses his standing as a hero in Paris. People who once looked up to him would see him as a traitor.
If Adrien were Hawkmoth in fanfic, it could change the dynamics of the story completely. It might explore his internal conflicts and the impact on his relationships with other characters.
On a personal level for Adrien, he would be straying from his own moral compass. He has always been a character associated with good and helping others. By helping Hawkmoth, he would be going against his own values, which could lead to internal conflict and a possible downward spiral in his character development. He might start to question his own identity and the choices he has made, and it could take a lot of effort to get back on the right track.
It's possible that a trusted ally shares vital information with Adrien, enabling him to unmask Hawkmoth. Or, maybe he catches Hawkmoth in the act during a critical moment.
In this fanfiction, perhaps Marinette endures the torture and it changes her in some way. She could become more determined to defeat Hawkmoth. After the torture, she might train harder, learn new skills, and become a more formidable opponent. She could also develop a deeper understanding of Hawkmoth's motives, which could be crucial in finally stopping him.
She may become more resilient. The torture is likely to test her limits, and through it, she'll grow stronger in spirit.
Maybe Adrien noticed some strange behavior from Nino that seemed similar to what he imagined Hawkmoth would do in fanfiction.
One possible reason could be that Adrien is being blackmailed by Hawkmoth. Maybe Hawkmoth has some information or has threatened someone Adrien cares about deeply, like his friends or family. So, in order to protect them, he decides to help Hawkmoth, even though he knows it's wrong.