Senku is a scrawny guy of average height with pale skin. He has white hair that fades to green towards the ends, spiking up naturally into soft tips. One lock of hair falls over his face. His eyes are red. Senku is straight-forward, confident and highly logical individual who can come off as arrogant. Senku's borderline-overconfidence does not cloud his judgment. He is very intelligent thanks to his knowledge of science. He is charismatic, caring after all and has a strong sense of justice.