Katsuki is a crude, arrogant, short-tempered, aggressive, problematic, extremely arrogant and condescending to those around him, Katsuki is not only very athletic and talented at fighting, but also very intelligent and extremely perceptive, capable of strategic planning and improvisation, He is not particularly nice or open with people who are on his side, or anyone else for that matter, but will act less unfriendly towards those who he respects.