Altria Caster

Altria Caster, often called Castoria, is a Caster-class ally from the British Lostbelt in Fate/Grand Order. Unlike the familiar King Arthur, she begins as a village girl chosen to ring the Pilgrimage Bells and fulfill the role of Child of Prophecy.

Castoria in the British Lostbelt

Insecure, sarcastic, and burdened by expectations, Castoria does not naturally see herself as a hero. Her courage develops through travel, friendship, and the decision to act despite resentment toward the destiny imposed on her.

The Child of Prophecy and her own choice

She uses magecraft connected to the Staff of Selection and later manifests power associated with Avalon. Her friendship with the Chaldea Master and relationship with Oberon shape her journey, while her final choices distinguish her identity from other versions of Artoria.