Verderinde is the leader of the witches and the main antagonist of the video-game Knights Contract.
Verderinde was one of the witches killed by Faust by the inquisition for being accused of spreading the black plague on Earth. She is then revived, and she joins with Faust in his plans; she fights Gretchen and Heinrich for the first time in episode 12, while seeing them with Minukelsus for a black dimension created by herself. She dies, while Gretchen and Heinrich take the opportunity to escape. However, Verderinde does not die and after Faust's defeat, she kills him using the black plague. After her defeat, she herself tells Gretchen that she humans she saved will kill themselves to the world, and that it was a pity that they would end up at odds.