Half-Korean, half-Mexican singer and dancer Samuel Kim Arredondo has been training to be a K-pop star since he was 11. He first trained with pop group Seventeen before forming one half of short-lived hip hop duo 1Punch – but he made his real breakout as a contender in the second season of Produce 101. Showing strong performances throughout the competition and consistently ranking high in audience votes, Samuel seemed like a shoo-in for the final group. But in one of the season's biggest surprises, he placed 18th in the final round. Resilient as ever, the now 16-year-old performer debuted as a soloist shortly after the show with his carefree single, "Sixteen." Everything about his latest offering is best described as slick – his dance moves, his self-assured lyrics, even the glossy sheen of his hair.