Some Puzzle Agent headcannons that I whipped up
The Hidden People's whispers don't make children go crazy. However, they do end up making any child that they whisper to become INCREDIBLY smart, like Prodigy smart.
Peppermint can keep the effects of the Whispers at Bay, it won't make you run through a forest naked, but it will make you pass out when the Hidden People speak to you
Nelson managed to steal back one of the tapes from evidence, the one that has the Hidden People whispering to Bo Murphy, however, Jim ended up playing it one day while visiting Nelson...and was greeted with an army of gnomes surrounding them
Nelson gets visions from the Hidden People, a lot now that he had direct contact with them
The Hidden People do visit Nelson, even when he doesn't call them, but usually they don't do...that much. In fact some them actually like him enough to sometimes help him (like pulling a blanket onto him if he falls asleep) or being a little mischievous at times (like finishing a puzzle that he was doing)
The reason that Ma took down the gnomes in the second game is because the Hidden People whispered to her in the middle of the night...and they weren't very happy.
The Brotherhood of Scoggins was eventually joined together again (sans Mike Lobb) But they don't speak of what happened between the two games now
Issac has some recurring nightmares about what happened, Glori too, but they can't really tell anyone about it because they'll sound insane
Nelson tried to "Gnome Proof" his home and his office. It didn't work.
Alfred did EVENTUALLY find Will again, but the Hidden People had found him first and whispered to him. He now is babbling about whispers and Gnomes, and now is under care
After the events of the second game, the Hidden People finally "Took Care" of the Astronauts that were in the woods...
After the events of the game, Glori and Issac decided to pack up whatever they could and moved to sunny Florida (mainly because they didn't WANT to stay in the same town where everything went down)
Nelson finally apologized to Korka, and he did tell her about the Bigfoot thing. Imagine her surprise when he actually explains what happened that faithful day
The Hidden People kinda just...protect Nelson now. If someone (like another agent) is messing with Nelson, they probably will be seen in a straightjacket, babbling about Whispers and Gnomes the next day. Nelson naturally now is a little paranoid about it now
Word spreads fast in the world of spirits and the unknown. Now that the Hidden People spoke to Nelson, he can see and hear what can't (or shouldn't) be seen or heard.
Some spirits actually have tagged along with the Hidden People to find Nelson
The Hidden People, being probably older than the earth itself, have EONS worth of Knowledge, which is probably why anyone they whisper to goes completely nuts. Some knowledge is too much for human comprehension, while others are what humans shouldn't know at all. Which is why they speak in puzzles