Who's-Who is 38 years old. Who's-Who tends to maintain a calm and serious disposition while around peers. He is also quite loquacious and ambitious. He can be derisive at times. Who's-Who stands at about 11 feet tall and has a lean, muscular build. Who's-Who has super long wavy pink hair. His bangs cover both eyes. He has a pair of long horns that curve upward. He has light skin.