Ah, thanks Brilliand, I'll go do some modding soon then.
Also if you or anyone else is wondering what I want to add, its a race I made before in vanilla known as the Thoht.
The Thoht are a race of Uruk sized humanoids with no faces other then a basic mouth, talons on both hands and feet, and crazy regenerative powers ([HEALINGRATE:1] and max recuperation to boot). Their biology also replaces the typical skeletal system with pure cartilage and all fat with the dreaded sponge. This makes them nearly pain and fire immune. Their unique senses allow them to see without eyes, and even navigate within magma (they have been known to SWIM UP MAGMACANNONS, with few ill effects. Ok never actually tested the magmacannon bit, but in arena they can survive for a hilariously long time in magma, and they have [LOCKPICKER] and [BUILDINGDESTROYER] so I assume it would be at least vaguely possible for them to gain entry that way.)
They live in glaciers, tundras and generally any place you would find the mods Frost Giants, who the Thoht will act as a bit of a foil to. This will be reflected in a Frost Giant specific Syndrome in the Thoht blood (Thoht blood is gaseous) that would cause immolation. Against other foes Thoht blood does not cause this combustion, but is cold enough to cause problems for most other races.
Thoht culture is equally strange. Their society's social strata are defined by previous military service, and is loosely based on the Qunari of Dragon Age fame.
Some major variations from this are the fact that Thoht eat their dead, and consider lying to be utterly unthinkable.
As for technology, Thoht are mostly tribal, but quite skilled in the art of weapon forging. They use Volcanic Greatswords and Greathammers (I would like for them to dual wield these, but don't know if its possible to force.) however their armor is not quite so advanced, consisting of leather, and at best lamellar versions thereof. The concept of shields are alien to the Thoht, however most are agile and skilled enough in dodging to make up for this.
All Thoht wear masks and turbans (assuming those are still in the mod) around the other races to hide their disturbing features.