Dark Protector

Dark Protector
Dark Protector is an Archetype of DARK Beast and Warrior-type monsters, whose effects focus on support any DARK Ritual Monsters. The Main Deck monsters (except the Ritual Monsters) and the Xyz Monsters are all level/rank 4 DARK Beast-type, and those monsters seem like guardians, protectors of the darkness, animals with black clothes and black jewels on it. The Ritual Monsters are all level 4 Warrior-type, and seem like warriors, with black clothes that resemble specific animals.

Origin
The Ritual Monsters were based on villains who, somehow, are connected to specific animals:

Playing Style
Because their effects focus on support any DARK Ritual Monsters, the archetype can migrate from a rank 4 strategy to a Ritual strategy. Dark Wolf can Special Summon any level 4 "Dark Protector" monster from your Graveyard, and the effects of Noroxi and Zankai can be used together, like "Clownblade" decks. Some monsters have the effect text "When you Ritual Summon a DARK Ritual Monster, you can banish this card from your Graveyard as one of the monsters required for the Ritual Summon.", like Djinn of Rituals monsters. Their Spell/Trap Cards focus on Ritual Summon, from the Hand or Graveyard.