Shrine Guardian

The archetype Shrine Guardian (神社ガーディアン; Jinja Gādian) refers to certain Effect Monsters used by the main characters of Yu-Gi-Oh! Zero. These monsters normally cannot be normal summoned or set.

Theme
Shrine Guardian monsters normally go with the theme of their player's decks as Jame Yutori has Dragon Shrine Guardians while Karin has Fairy Shrine Guardians and Choji as DARK Shrine Guardians.

Play style
Shrine Guardians with the same the name cannot be on the field with each other and thus summoning monsters that can help coordinate their effects is often a good strategy.