My orcs have thick skins, spit venom, sometimes replace bits of themselves with those of other creatures and have the culture of the Clans from Batletech.
Basically, the military faction of the elves split off, moved themselves to a remote location to contain a threat there and went all bio-punk to improve their fighting capacity.
Functionaly, this typically means an AC16 rhino like skin, the ability to spit blinding venom like a spitting cobra. Some of them have even more.
Their shaper caste are warlocks who specialise in modification surgery, they can get really weird and usually wear scorpion quills on their heads as armour and a badge of office.
The leaders of the clans that like modifying themselves a lot will have their top half joined to a giant scorpion. 8 legs, armour, 2 arms, big weapons. Scary to go up against.
Their cavalry ride wooly rhinos.