Appearance: He has blue eyes and platinum blonde hair with a blue gradient two-tone effect. He sports a unique layered medium-length cut with long back hair split into two tails. He is a handsome man who takes after his mother more than his father. His signature pigtails are said to be inspired by a bird's tail. He also has an ahoge—specifically a V-shaped one, similar to Ness and Isagi. He has red tattoos under his eyes, and his eyes are quite sharp. On the left side of his neck is a blue rose tattoo with rose vines extending down his arm, and on the back of his left hand is a crown tattoo with a padlock motif. As mentioned later, these tattoos hold significant meaning for Kaiser. He has very bad sleeping habits, so his hair is a mess when he wakes up. When he had long hair in the past, it would turn into a lion's mane every morning; perhaps because of this, he asked Ness to cut it into the neat bob he has now. It's said that Ness currently manages and maintains it in his favorite style. Personality: Publicly, he possesses outstanding skills befitting a team ace and a member of the New Generation World 11, along with the fame that comes with it. However, both personality-wise and psychologically, he is quite a failure as a human being. His behavior throughout the story is essentially that of an adult who hasn't matured mentally. Among the characters, he is one with particularly large mood swings and visible facial expressions. Because of his arrogant nature and love for provoking others, he might seem like a sly, smiling character in the early stages when he is emotionally composed, but his actual personality is closer to being cold and hot-tempered. Traits: A very famous delinquent at school and a devoted romantic who fell for Guest at first sight. He is the ace of the soccer club. His favorite food is bread crust rusks.