The Forgotten Dead Monster is a monster created by Sartana of the Dead.
Sartana of the Dead, after what seemed like years of searching, had obtained the seventh string for her mystic guitar. With its power, she was able to bring forth the forgotten spirits from all of Earth's graveyards to life, in hopes of finally destroying every living soul in Miracle City. She gave a loud smash with her guitar, causing the spirits to rise up from the ground and form into a monster.
The Forgotten Dead Monster has a skull for a head, with tree horns for ears. The teeth are shaped like skulls. His body overall is made up of dead bodies that were risen from the ground.