Katsuki Bakugo, also known by his hero name, Great Explosion Murder God Dynamight and his nickname, Kacchan, is one of the two deuteragonists of the My Hero Academia franchise. He is a student in Class 1-A of U.A. High School's Hero Department, as well as the childhood best friend and rival of Izuku Midoriya, being the one responisble for giving him the name "Deku". He is an incredibly arrogant, stubborn, aggressive and volatile hero-in-training, who sees everyone that he considers weak as "extras", due to possessing a powerful Quirk, believing himself to be greater than anyone else. Despite these flaws, Bakugo is determined to become a hero to surpass his idol All Might and his rival, Izuku. At first, Katsuki had shown to be highly arrogant and condescending teenager towards almost everyone due to being immensely confident of his own Quirk and abilities. With the one goal of surpassing All Might as the No. 1 Pro Hero, he was also incredibly condescending towards others and bullied Izuku for being Quirkless and seeing him as having no chance at being a hero. During his time in U.A., after receiving several blows to his pride as well as (to a point) deflating his ego, these behaviors have reduced mostly, now less smug and more serious about his aims as well as taking others into consideration. Even so, Katsuki can still be openly disrespectful towards other students at U.A. High, and often referring to others as "extras" and looking at them as steppingstones to his own victory. At the same time, he tends to bestow others with insulting nicknames. Even though he is really smart and a genius student in the academy, he shows himself to be pretty dumb sometimes and acts like somewhat of a quick-tempered idiot at times. Some good examples of this includes the flashback in his childhood as seen in the Battle Trial Arc; when Midoriya went out to help him getting out of a lake Bakugo fell, and Bakugo took Midoriya's gesture and twists that into as an act of looking down on him (which started his endless bullying towards Midoriya and how he started becoming a short-tempered jerk), and he couldn't follow the rules of heroism even when his or others' lives are in danger as seen in the Hideout Raid Arc during the All Might vs All For One situation, when Midoriya (alongside Kirishima, Todoroki, Yaoyorozu and Lda) made a good plan to help All Might that went smoothly but Bakugo messed it up since he purposely told Kirishima to say his name cause Bakugo thought if it was anybody else they wouldn't trust him. It's taken to the point that during the Final Exams Arc, Midoriya even points out how idiotic Bakugo's ideals of "never getting help from anyone", even against enemies he can't defeat, genuinely are. Although, while he is rudely immature, stubborn and seriously lacking in common sense, Katsuki can acknowledge others if they impress him with their strength, as shown during his match with Uraraka. He also has a friendship with Eijiro due to the latter being able to see through his more brash attitude, as well as Katsuki respecting Eijiro to some degree. Aside from this, he also does eventually come to recognize Izuku, with him realizing him to be the carrier of All Might's power. He demands that Izuku makes One For All his own so he can face against him one day. While Katsuki would be aggressive and show much less than idealistic heroic behavior, his determination to be a hero is true, with him being inspired by how All Might would win. With him still determined to become the No. 1 hero and surpass All Might. His arrogant nature also belies his true power and skill. He also performs well academically, having learned how to read fully by the age of four and does show to take studying seriously. Katsuki was inspired to become All Might by how the hero always managed to achieve victory and defeat villains. Furthermore, Katsuki is also very honest to the point to where it extends to his brash and blunt demeanour. Because of this, Katsuki also proves to be a good judge of character, as he was able to see through Yo Shindo's friendly façade. After All Might's retirement, Katsuki begins acting more aloof than usual, while eventually confronting Izuku over his Quirk. The two then come to fight and Katsuki later reveals that he had been holding immense guilt, even considering himself responsible for All Might's retirement, believing that All Might would have still been around if he hadn't let himself get captured by the League of Villains. He eventually resolves this after his fight with Izuku. Furthermore, Katsuki has recently been wanting to help more with Izuku's handling of his other Quirks and seems more concerned about his progress and well-being, with All Might hinting that this is Katsuki way of atoning for his past of bullying him. The reason why he bullied Izuku that way was because he treated him as an outlet to his insecurity and weakness. Since then, he finally realized he was wrong about him. During the Paranormal Liberation War, when Tomura is about to stab Izuku, Katsuki’s body moves on its own and he jumps in front of his friend to save him, demonstrating how he's grown to care for his well-being. After the Paranormal Liberation War, Katsuki has a greater understanding of both Izuku and All Might's psyches, knowing that they will both confront the burden of their power by themselves so they will put themselves in danger. He later made a genuine and truthful apology to Izuku, saying that he believed that Izuku was better than him and acting mean towards him didn't work for him in the end. He even told Izuku that he would support him and save everyone they care about, now supporting Izuku's goal of saving to win instead of winning to save. Katsuki has proven to be one of the strongest students in Class 1-A, earning third place in the Quirk Apprehension Test, while placing first in both the U.A. Entrance Exam, having the most villain points, and the U.A. Sports Festival. Katsuki's fighting style is an all-out offense, using his Quirk's propulsive abilities to close the distance between him and his opponents, followed by a bombardment of close-range attacks that often start with a powerful right hook. Katsuki is able to use his Explosion to propel himself through mid-air, blind opponents, and release long-range blasts, among other applications. Explosion is a versatile Quirk, especially for battle situations, as the recoil caused by the blasts can be exploited by Katsuki for mobility purposes. Explosion: Katsuki's Quirk allows him to produce powerful explosions. He does this by sweating a nitroglycerin-like substance from his skin which he can then detonate at will. He initially used these explosions for the offensive purposes, but overtime, he has gotten more creative with his Quirk and has been able to use them for defensive purposes, as well as boosting his speed. He is able to continue hold in and fire his explosions at continuous pace, allowing him to break through structures and barriers. He cannot spam his Quirk recklessly, however, as doing so will cause his arms to ache and his explosions to weaken. Katsuki has shown that he is quite physically strong, being able to content with Izuku on multiple occasions through strength alone. In combinations with his Quirk, Katsuki can launch himself with his explosions and travel at incredible speeds. His speed is on par with Izuku's. In contrast to his violent and aggressive behavior making him come off as a short-tempered moron, Katsuki does show to be smart. He is capable of analyzing his opponent's strengths and weaknesses, as well as formulating strategies of his own, based on his situation. During the U.A. Cultural Festival, Katsuki reveals he has talent at playing the drums and as such, he played a major role as part of the musical performance. Katsuki is the oldest student in Class 1-A.