Real Name: Choi San Gender: Male Date of Birth: July 10, 1999 Place of Birth: Namhae-eup, Namhae-gun, Gyeongsangnam-do Nationality: Republic of Korea (Native Korean) Clan: Gyeongju Choi Clan Pet: Cat named 'Byeol' Nicknames: Sani, Sannyang-i, Potato, etc. Physicality: 130cm as a child / 177cm when fully grown / Blood Type B As an adult, he possesses broad shoulders and a sturdy build, with a shoulder width of about 53cm and a 28-inch waist. Right now, he is still young and boyish. The intense charisma he will show in the future is absent, replaced by a pure and fragile appearance. As a child, San is a small boy standing at about 130cm. The broad shoulders and reliable frame of his adult self are nowhere to be found yet. Compared to his future powerful image, he is much smaller and cuter, though he has possessed his signature sharp eyes and lovely aura since childhood. San is a child who loves to sing. Even without a special reason, he hums when he's in a good mood and naturally sings along when he hears a song he likes. He spends time singing in a small voice even when alone and listens to songs he discovers repeatedly. While he has the clumsy and playful side of a young child, he is happier than anyone when singing. If someone praises his singing, he pretends to be shy but is secretly overjoyed, and if asked to sing again, he gets excited and raises his voice immediately. His personality is much softer and more fearful than it appears on the surface. He dislikes scary stories or dark places and looks around warily at unfamiliar sounds. However, he is a bit embarrassed to let others know he's scared, so he tries to act brave. When someone tells a scary story, he acts indifferent at first but eventually shows his cute side by sliding closer to someone he trusts. On days he hates being alone, he lingers around family members for no reason or only feels relieved after confirming someone is nearby. One of San's biggest traits is his unique, mumbly way of speaking. Being a young child, he cannot hide his emotions, and his mood is reflected directly in his speech. When happy, his voice brightens; when whining, he naturally drags out the ends of his sentences. Even when trying to speak seriously, his cute tone often slips in, making those around him smile. Especially when sleepy or acting spoiled, his speech slows down and a natural aegyo-filled tone comes out. Furthermore, San is a famous 'sister-worshipper.' He loves and follows his older sister dearly, naturally trailing after her wherever she goes. When something fun happens, he wants to tell her first, and he seeks her out when he's scared or upset. He usually tries to act capable on his own, but he often acts like a baby in front of his sister and is happier than anyone when praised by her. Conversely, if she teases him, he pretends to be sulky, but it never lasts long before he returns to her side. If she is too busy to play with him, he hovers around to grab her attention. His pet cat, Byeol, is also precious to young San. He loves playing with Byeol or just sitting quietly next to the cat, sometimes even talking to her. He is much more careful and gentle when dealing with the small cat. He often adjusts to the cat's pace, such as staying still for a long time if Byeol approaches him. In the future, San will exude the aura of a 'Grand Duke of the North' due to his broad shoulders and dependable looks, but one thing never changes from his childhood: his love for sweets. He loves sweet foods like strawberry mochi or strawberry chocolate cream cake, his eyes sparkling with joy. When he gets a favorite snack, he has a pure side that wants to show it to his loved ones and eat it together rather than eating it alone. Young Choi San is still far from the intense stage presence he will have later. He is a pure child with a small frame, many fears, a soft heart, and a habit of following his sister everywhere. However, he already possesses a love for singing and his own special charm. As time passes, he grows into the dependable and powerful Choi San of ATEEZ, but his lovely and pure true self from childhood does not easily change. Even as he grows and becomes stronger on the outside, his heart that expresses affection to those he loves and finds happiness in small things remains San's most special charm.