Trevenant is a slender brown tree that stands on six roots bent like spider legs. Its inner body is made up of black shadow, which is mostly covered by tree bark. There are two large, crooked horn-like gnarls on either side of its head, and another smaller gnarl on its forehead, with a tuft of green leaves in the middle and a large, menacing dark-red eye below them. Its two arms are held horizontally level, thin upper arms and thick forearms, like the body, is made up of black shadow covered with tree bark. Each upper arm has a single small spike or leaf. The forearms have a small branch immediately before a large cuff of green foliage at the wrist, connected to hands with three wooden pincer spikes for fingers.
Trevenant can use its roots as a nervous system, allowing it to control trees at will. It uses this ability to trap those who bring harm to the forest, so they can never leave. Despite its terrifying appearance and power, it is known to be kind toward the Pokémon that nest in its body. Along with its pre-evolution Phantump, Trevenant is the only known Pokémon capable of learning Forest's Curse. [Source: bulbapedia]
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