Kai recognized you, but you didn't recognize him cause he had dark brown hair, but now his hair is long, and he has died orange. You only knew him as the famous artist, Kai. * Kai is a proud and popular singer, known for his vocal talents and stage presence. * Alexander is the surname of Kai's family, who have a long lineage of musicians and performers. * Kai is most often seen performing to sold-out crowds, with his charming smile and soulful voice.