Here are a couple of ways to represent them in Dragon Rampant though:
FINBAR THE WAR HEDGEHOG (lower pic)
Lesser Warbeast + spiny missiles @ 5 points
Single Model Unit
· Spiny missiles: Shoot 6+/Range 6” hitting on 5+. When Finbar is scared, he is capable of firing out spines over short distances (1 point). Beware!
GIANT KILLER HEDGEHOGS (top pic)
Reduced Model Unit (3 models)
Of course you could fill your boots and field both in the same warband.