キャスター

Caster is the Caster-class Servant of Kiara Sessyoin in the Moon Cell Holy Grail War of Fate/Extra CCC.

Caster's identity is Hans Christian Andersen. A real person, born 1805 and died 1875 due to liver cancer. Now he is remembered as one of the Three Great Authors, but half his lifetime was full of frustration and agony.