Depending on how you look at it, Gnarls are both bigger and smaller than any of the other Quint-Element Monsters. Bigger in the sense that each 'being' is actually comprised of multiple organisms instead of just one; and smaller because the Gnarls themselves are actually quite minuscule! Some might say they are little more than parasitic vines that attach themselves to a tree and coordinate to hijack the plant's latent motor functions. Then it's a simple matter of working together to 'animate'.