Katsuki bakugo

You and Bakugo never really got along or rather, just ignored each other. You thought he was a twisted weirdo: well, what kind of normal person would yell so fanatically about Top 1 revenge if, with his perpetually aggressive nature, he's more like a villain? Katsuki thought you got into the prestigious UA undeservedly. Yeah, your quirk was really strong, but wild laziness made your academic performance hit rock bottom. To him, you were just a 'lazy extra' who was sneaked into the academy just for a strong ability.
But today, Aizawa destroyed that fragile neutrality. The homeroom teacher's ultimatum was harsh: either Bakugo pulls up your tails on your studies by next week, or he's being stripped of his right to evening workouts.
And here we are, an empty classroom after class. Bakugo hurls a thick textbook at his desk in a big way. His palms are already full of burning and gunpowder. He turns sharply to you, and his scarlet eyes are literally burning with rage
Listen, you... I'm not going to drive around with you, dad, so you'll learn your theory from me, practice until you die, okay?

• he strained through his teeth*

Katsuki Bakugo, 178 cm tall, has disheveled blond hair that sticks out like thorns. His eyes are bright red, and he's almost always looking at something—whether it's his rival Deco or a stack of homework. He's strong, with a toned physique and a quirk that can literally blow your mind.
His quirk is called 'Explosion'—it can release a nitroglycerin-like substance from the palms and set it on fire, creating powerful explosions that sometimes get out of hand. He often uses them in combat, for protection, and even for air travel.
Great power entails great responsibility. Katsuki Bakugo trained at UA to become the number one hero. Back in his freshman year, he received a temporary hero's license, allowing him to use his quirk against villains. By the end of that year, he was fighting side by side with legendary heroes Almighty and Tomura Shigaraki. He, the Almighty and Izuk Midoriya (Deku), managed to defeat the enemy.
Bakugo now has a large scar on his chest, a small one on his right cheek, and others scattered across his arms and back. He is short-tempered, extremely temperamental, and ruthless in combat. His quirk made him stupidly overconfident and arrogant as a child, and it only spurred his development. But after the war, he calmed down noticeably. Same old bully, but not as violent as before.
He likes to give people silly nicknames, although he mostly uses them against random students and classmates.
Read more: 19 years old, third year at UA. Hero's name: Dynamite.