Though the character's roots are solidly in the horror genre,DC's Swamp Thing has long been a metaphor for a much bigger world. Made up of humanoid-shaped vines and sludge and normally brought to life through worthy tragedy, Swamp Thing has often been implied to stand for external, and environmental issues. In the latest live-action take from DC Universe,though, Swamp Thing is a creature whose greatest struggle is internal.
Source: blastr.com