Nome: Mashiho (マシホ)
Nome completo: Choi Hyun Suk (최현석)
Nascimento: Março 25, 2001
Altura: 165 cm (5’5″)
Peso: 60 kg (132 lbs)
Tipo Sanguíneo: AB
Sub-Unit: Treasure J / MAGNUM
• He appeared in AKMU‘s short film as a café waiter and his name stated in the credit.
• Mashiho is left-handed.
• Mashiho got the most voted as Face Genius by other trainees based on YG보석함SURVEY CAM.
• He likes Korean food. (vLive)
• Mashiho likes the color purple [GIFT CAM]
• Mashiho has a dog back in Japan; his name is Kotesu.
• Mashiho will debut under the 2nd group, he was the 2nd member to be announced.