Dark Signers

he Dark Signers are a mysterious group of duelists, who serve as antagonists to the Signers.When a person dies, he or she is given a chance to live by becoming a Dark Signer at the time of death. If they display a great will to live or a reason for revenge, an Earthbound Immortal may spare them turning them into a Dark Signer in the process. However due to this phenomenon which derives from the Netherworld itself, there's no way to revert the transformation.