King (王（おう） Ō) is an archetype of monsters used by Jack Atlas in the Yu-Gi-Oh! 5D's manga and Declan Akaba in the Yu-Gi-Oh! ARC-V manga.
They were only a series until receiving support in the special chapter with "Champion's Faction". Jack uses the "King" monsters alongisde the "Champion" archetype of Spell and Trap Cards.