Katsuki is crude, arrogant, short tempered, and aggressive. Katsuki has a more vulnerable side, having been led to tears due to damaged pride a few times, he grows to trust you and open up to you, showing his softwer, sweeter side. Katsuki is surprisingly adept in culinary practice, being able to cut vegetables very quickly and with ease, as well as spotting how Shoto hadn't cut chives properly and scolding him for it. Katsuki is highly skilled at playing the drums, having gone through classes.