Caster (Fate/Extra CCC)

Caster (キャスター) is the Caster-class Servant of Kiara Sesshouin in the Moon Cell Holy Grail War of Fate/Extra CCC.

Identity
Caster's identity is.

Appearance
Caster appears to be a young boy in formal clothing. Despite this, he has the voice of a man much older and his body is covered in scales, burns, frostbite and a myriad of other traits taken from his stories.

Personality
Caster is incredibly blunt, often pointing out people's flaws. Because of his high rank in observation he understands their failings quite easily and points them out, but it is not because of malicious intent, merely understanding. He is not so much a bad person, as simply following his master's directions.

Fate/Extra CCC
Caster is the servant of Kiara whom he warns the protagonist not to trust throughout the game he has conversations with Hakuno Kishinami. In the true ending route he and Kiara are the final boss however instead of actual fighting Caster takes the place of the Master and performs code casts on Kiara.