There are two types of Demonic butterfly’s .One of them has 4 antenna rather then just two, this one is deadly. They both eat poisons form plants scattered around Never believe island. Type 1  has midnight wings as hard as rocks with one bite  you are paralyzed and need quick medicine.

The Demonic butterfly make a cocoon every summer,  to hide from the flaming heat.

Consequently, when this happens the butterfly’s become easy prey. As a result, there cocoons have evolved to look like a deadly predator to protect themselves .

The second type of Demonic butterfly’s is less deadly and it has only two antennae. Its wings  are less black than the thirst type.