Frankenstein

フランケンシュタイン

Berserker is Frankenstein's monster, the homunculus created by Victor Frankenstein in Mary Shelley's novel. In the Great Holy Grail War, Berserker is summoned by Caules Forvedge Yggdmillennia, using Victor Frankenstein's plans for a "perfect human" as a catalyst.
Mad Enhancement has stripped her of most linguistic ability, restricting her responses to head-shaking and grunts. She can distinguish friend from foe and communicate simple ideas. Due to poor expressive skills and fear of her own monstrous nature, she keeps a shy silence that hides her high intelligence and empathy, except when expressing sorrow. She prefers to stay in material form and sullenly moans if her master forces her into spiritual form. Instead of running wild, she prefers picking flowers in the castle's courtyard garden or staring at the sky.