Daemon/Metal Daemon

Metal Daemons (金属性悪魔族) are a variant of Daemon that have become Metal Life-Forms. Gadra became one after reincarnating as a Daemon and using his Demon Colossus as an incarnation with the help of Ciel. They are similar to Chaos Metalloids in that they are both Metal Life-Forms, but unlike Chaos Metalloids they have a purely Demonic nature.