"Infernoid" (インフェルノイド, Inferunoido) is an archetype of FIRE Fiend-Type monsters that debuted in Secrets of Eternity. This was the first archetype whose monsters were all Special Summon Monsters, until the release of "Infernoid Decatron" in Clash of Rebellions. They are supported by the "Void" archetype of Spell and Trap Cards.