Occasionally, I reference someone by the name of Jen.
Jen is a human who was pulled into the Grey & Green by an entity known simply as "J" or "Jayne Doe". Jen is from the same universe I am from, just from the year 1996.
He is very much a flower child, a true hippie through and through. Unfortunately for him, one of the joints he smoked back in the... 70s or 80s... was laced with an herb that has benign qualities for most species, but for humans...
Well, he is called a Seer for a reason.
Jen is capable of seeing anywhere, at anytime, in any dimension. He can focus this ability through various means (tarot cards, cleromancy, lithomancy, tasseomancy, you name a method, he has probably attempted it at least once). But... it isn't exactly pleasant. He loses track of reality, he forgets who he is, where he is, what has happened...
Luckily, exposure to the Grey & Green has actually allowed him to gain greater control of his abilities. It has given him greater freedom than most mortals typically get living here, as he knows what places to avoid or who to trust.
It also helps that he is one of the residents of the Castle-On-The-Edge, one of the territories the Grey Lords avoid. In part because most of the people living there are not very Grey Lord or other malicious entity friendly. (It is honestly astounding how many warriors are there, and how many of those warriors are legends in their own right).
He is good at befriending people as well, since he is a genuinely kind-hearted man who is always willing to lend a hand.
If you are wandering the Grey & Green, you are likely to run into him at one point or another. Just keep your eyes peeled for a 6'8 beanpole clothed in a riot of colors and patterns whose smile feels like a sun has chosen to bless you. (His smiles are a wonderful thing, since the Grey & Green has no sun).
Try to be nice to the people who are travelling with him though, because you will either have to deal with some form of enraged warrior or a Grey Lord if you upset them. Neither option is good. Neither option is good.
He likes rocks, and plants. He might give you something in return for information on areas where he can find some.
For now, safe travels, and remember that all you need is love.