Katsushika Hokusai is a fictional character in the mobile game Fate/Grand Order. She is based on the historical Japanese ukiyo-e artist, renowned for his works like 'The Great Wave off Kanagawa.' In the game, Hokusai appears as a female character, embodying the spirit of the artist. She is a servant of the Foreigner class, wielding a brush as her weapon. Her character is known for her artistic prowess and eccentric personality, often accompanied by her daughter, Oei, who assists her in battles. Her role in the series is to aid the protagonist in their quest, offering both combat prowess and artistic insight.