Oboro Shirakumo

Oboro Shirakumo was a student in Class 2-A at U.A. High School, training to become a Pro Hero at the same time when Shota Aizawa and Hizashi Yamada were also attending.

History
He finds a cat that Shota Aizawa left an umbrella over. He takes the cat and the umbrella with him to class.

Joint Training Arc
After the U.A. faculty conference, where Hitoshi Shinso is officially admitted to the Hero Course, Present Mic brings up Oboro to Shota as they are walking down the hallway.

Quirk
Cloud: Oboro has the ability to manipulate water to form clouds. The full potential of this Quirk is unknown, however, given that Oboro was in U.A. High's hero course, Cloud is presumably useful in combat and/or rescue. He is capable of moving through the air by creating clouds and riding on them.

Trivia

 * Oboro’s first name is composed of the kanji for "hazy, cloudy" (朧), and his last name contains "white" (白) and "cloud" (雲).