Haruki Bakugan

Haruki Bakugan, also known as Haruchan (はる) by his childhood friends, is a student in Class 1-A at U.A. High School, training to become a Pro Hero. He is the main deuteragonist of the series.

Quirk
Nuclear: Haruki's Quirk allows him to secrete his vitality into nuclear sweat from the palms of his hands and ignite it on command, allowing him to create strong energy blasts. The more Haruki sweats, the stronger his blasts becomes. If Haruki overuses this power, his forearms will start to ache.

Haruki has a strong grasp on the applications of his Quirk, as stated by Coach Bakugo. Not only can Haruki use the energy blasts for attacking but he can also use them to propel himself and navigate through the air at high speeds, allowing him to fly at his opponents without giving them time to react, and evade incoming attacks, even while in the air. The shock-wave from his blasts can even be used as a shield.

Haruki can keep up his blasts continuously, long enough to break through Enjiro Kagoshima's Sharpening Quirk and negate Kenji Todoroki's "Earth Pillar Wall " for a short while before being overwhelmed.

As part of his training, Haruki submerged his hands into boiling water to expand his sweat glands, then created chain blasts to increase the scale of his attacks.