Servants are Heroic Spirits and Divine Spirits summoned by the Holy Grail for the purpose of competiting under Masters in the Holy Grail Wr.
Nature[]
Servants are Heroic Spirits made into familiars of the highest rank that are bound to the Master. Pure Heroic Spirits, the "main body" in the Throne of Heroes, can only be summoned by the world, and summoning even one like in the case of Jaden Adigo summoning the Heroic Spirit King Arthur II in the Saber-Class is considered to be a miraculous occurrence. Differing from the normal definition of familiars that can be likened t