Nero Yuzurizaki (譲崎 ネロ Yuzurizaki Nero) is one of the four main protagonists in Tantei Opera Milky Holmes. She is an obnoxious girl with a hefty appetite who speaks with the masculine term 'boku' and she is very selfish, often talking down on others while comforting her own greed. Her Toys allows her to control machines using a small piece of metal.