Julian Ainsworth (ジュリアン・エインズワース, Jurian Einzuwāsu?), also called Julian Ichigi (一義樹理庵, Ichigi Jurian?) is the current head of the Ainsworth family and the central antagonist of Fate/kaleid liner PRISMA☆ILLYA. He is often clad in the Conceptual Replacement of Darius Ainsworth, the first head of the family.