A sinister and eerie screams might be heard from the forests, but dont answer them, or you will became TREVETVIST’S victim! (Karoma region)

Phantump (karoma).
The stump pokemon

These pokemon have formed from the soul of a person that lost in a forest. Their cries scares off anyone.

Trevetvist.
The twisted tree pokemon.

The screams of lost people might be heard from the forest, but be wary that they can be a trevetvist's attempt of luring you to their domain, where it will take your live away.