Servant 1

Servant [Magecraft]

The Heroic Spirits summoned by the Holy Grail. They fell under the "Familiar" classification.

Seven Classes (only) were designated in advance. They were souls of the greatest purity called forth by using relics tied to the specific Heroic Spirits.

Originally they were not existences that could be controlled by mere humans, but they were forced to cooperate with the Masters due to the Command Spells. These Command Spells represented Masters' right to rule. For Servants, obedience towards the Command Spells were "the absolute condition required for materialization".

Servants could revert to Spiritual Form at any time. While in Spiritual Form, they could pass through inorganic matters that lack mana.

During Lancer's surprise drop attack from the ceilings at the Emiya residence, he phased through the roof and entered the living room. He then materialized after clearing the ceiling.

While in Spiritual Form, Servants were not affected by physical interference. However, their abilities to affect the material world decreased. As a result, it was considered advantageous to materialize during combat.