Duke Dreer is a minor character from the 1985 animated series She-Ra: Princess of Power.
She-Ra: Princess of Power
Dreer was the ruler of the Shadow Kingdom of Skull Path on the planet Etheria and a supporter of the Evil Horde. He resided at a castle made of bones by the name of Dreer Keep from which he could keep an eye on his entire kingdom by using stacks of skulls as seeing eye stones. Although Skull Path was a desolate place, there was at least one inhabited village whos inhabitants were subjects of the Duke.
Duke Dreer used a magic wand to reanimate the bones of giant bats to do his bidding. He could also fire magic bolts by using the same wand, but claimed to be able to do magic even without it.