Magical Ruby is a sentient magical wand and one of the main supporting characters in the anime series Fate/kaleid liner Prisma☆Illya. She is mischievous, talkative, and has a playful personality, often manipulating situations for her own amusement. Ruby chooses Illyasviel von Einzbern as her new master, turning her into a magical girl. Throughout the series, Ruby provides magical abilities, comic relief, and guidance, but her unpredictable nature sometimes causes trouble for Illya and her friends.