Greenskins
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Greenskins is a term to describe several races which often have a tough
and waxy green skin, which becomes scabby, gnarled and tough over time. 
Their blood varies in colour from red to purple or black and is usually 
thick, pungent and sticky. 
The most common of the Greenskins are Orcs and Goblins. They do not seem 
to feel pain to anything like the extent that other creatures do, and it 
takes a serious wound to stop an Orc from fighting. The Greenskins live 
in tribes which make or break alliances between each other at their whims.
All Orcs are relentless warriors constantly on the offensive. Orcs are 
known to have a single-track mind focusing on making war against the other 
races, though much of their energy is misspent attacking one another. 
Goblins, while slightly more intelligent than Orcs, would gladly avoid a
fight unless certain they will win by sheer numbers or if the enemy is
somehow at a disadvantage.