Oboro Shirakumo (白しら雲くも朧おぼろ, Shirakumo Oboro?), also known as Loud Cloud (ラウドクラウド, Raudo Kuraudo?), was a student in Class 2-A at U.A. High School training to become a Pro Hero. He was in the same class as Shota Aizawa and Hizashi Yamada. He was killed during a battle with a villain during his Hero Work-Studies.

His corpse was recovered by All For One and transformed into a Nomu called Kurogiri to act as Tomura Shigaraki's caretaker.