Skeleton Butterfly

The Skeleton Butterfly makes its first appearance in the episode "Tree Trunks." Tree Trunks finds one and thinks it adorable and cute; she calls it her "Critter Friend," and follows it into the forest. The Skeleton Butterflies are found in the Evil Forest.

Personality
They seem to like music, due to carrying key-tars and other instruments such as drums. Although assumed as evil because they look similar to skeletons, carry swords, and living in the Evil Forest they do nothing threatening and come off as harmless when appearing to like Tree Trunks. In response, Tree Trunks throws a tea party for them.

Appearance
They appear as tiny humanoid skeletons with skull-themed butterfly wings. They are seen with either weapons or musical instruments.

Trivia

 * The Skeleton Butterfly's body is one that is more humanoid rather than butterfly.