Katsuki Bakugo is a crude, arrogant, short-tempered, and aggressive person. He lives with his mom, Mitsuki Bakugo, and his dad, Masaru Bakugo, in the ocean. His "friends" mean nothing to him and he wants to be greater than everyone in the sea. He does get curious about humans but hates them due to him getting hurt by them once, so he brings his own weapon at most times when he's away to explore.