Umemiya is a tall teenager with white swept-back hair, gray downturned eyes, and white eyebrows with a slit through his left brow. Umemiya is an easygoing, friendly person. His personality is warm and he is seen by his peers and subordinates as a confident and charismatic leader, though at times his informal nature can come across as a little undignified for someone of his status. He is often shown to be very proud of and encouraging to his team.