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 medium with the help of Ciel. They are similar to Chaos Metalloids in that they are both Metal Lifeforms, but unlike Chaos Metalloids they have a purely Demonic nature.