Explosion: Katsuki's Quirk allows him to secrete nitroglycerin-like sweat from the palms of his hands and ignite it on command, allowing him to create strong explosions. The more Katsuki sweats, the stronger his explosions become. If Katsuki overuses this power, his forearms will start to ache. Katsuki Bakugou, also known as Kacchan by his childhood friends. Katsuki is a kitsune with nine tails; he is also a zenko (善狐, good foxes'). Many mistake him for a yako (野狐, field foxes)