What are some of the denizens of the Shadow Plane? [closed]

Question

Important Note

While I do understand that the DM is ostensibly God in his game. My GM does generally respect most things written in book.

Explanation

I have a character who is connected with the Shadow Plane in a E6 D&D3.5 Pathfinder Hybrid game, and I was talking to my DM who said that nothing lives in the shadow plane. However, I am sure that that I've read about some creatures that are native to the Shadow Plane. In addition, I think there's a template to turn creatures into Shadow creatures.

Question

1. What things live in the shadow plane and where can I source them from the books.
2. What is/are the template(s) for making a creature/character a shadow creature, or where can I find it/them?

I'd appreciate answers including page numbers for any referenced materials.

Scope

D&D 3.5 (No 3rd Party) + Pathfinder + E6

I would like to know of anything that is outside the scope of E6 however please note it as such because it will need extra special DM approval to use, as well as a good explanation as to why I should be allowed to use it.

Answer 1

There is no one "Shadow Plane"/"Plane of Shadow"/"Shadowfell" because it is only an archetype that different games use. There is no one canonical "shadow plane". It is the GM's discretion as to what to veto and what to include. Might seem harsh, but a GM has got to do what a GM has got to do. If it works for your game, good.

The civilization most players are familiar with is the Shadar-kai. They first appeared in Fiend Folio, for D&D 3.0, and later the Monster Manual for 4th Edition. There are also a race of language worshiping humans called Illumians which were detailed in Races of Destiny. Forgotten Realms also has a race of humans called Shade who live in the Shadow Plane and who are much like the Shadar-Kai.

MAny campaign setting's Shadow Plane have an ecology;

From the Forgotten Realms Wiki

The best-known inhabitant of the Plane of Shadow is the shadow. Others are generally evil and dangerous, including the dusk beast, the ecalypse, the nightshade, the shadow mastiff and the umbral banyan.

From a Greyhawk Wiki

Inhabitants of the Plane of Shadow include the khayal genies, dark ones, darkweavers, shadar-kai, shadelings, gloamings, shades, shadows, slow shadows, shadowswyfts, greeloxes, cloakers, illumians, nightshades, shadow dragons, and shadow demons.

The Plane of Shadow from Eberron contains life too.

Answer 2

Lots of things live in the Shadow Plane.

For example, the Dark template from Tome of Magic can be applied to any creature; it’s kind of the Shadow Plane equivalent to the Celestial and Fiendish templates. Unlike those templates, however, Dark is quite excellent: among other things, it gives Hide in Plain Sight, as an LA +1 template. (do note that RAW, not all forms of HiPS are the same, and Dark’s version only eliminates the need for concealment/cover, not the need to avoid direct observation – this makes it more like the Ranger’s Camouflage than the Ranger’s version of Hide in Plain Sight. Many DMs treat all forms of HiPS as covering both requirements of Hide, though)

There are similar templates for Shadow Plane versions of creatures, but those aren’t as good (much more LA).

In general, Tome of Magic has a lot of information on things from the Shadow Plane, because an entire third of the book is devoted to Shadow Magic. Note: I do not recommend the Shadowcaster; it is a rather underwhelming class.