Choi Siwon

Choi Si-won (Korean: 최시원; born February 10, 1987), often known simply as Siwon (Korean: 시원), is a South Korean recording artist, actor and model. He is best known as a member of the K-pop boy band Super Junior and its subgroup Super Junior-M. He is also one of the first four South Korean artists to appear on Chinese postage stamps.

Siwon is best known for his "handsome appearance" and muscular physique. His looks have earned him spots on various idol "best" lists, such as being put at eleventh place in the show Idol Chart's "Most Flawless Body" list. His body is often referred to as the best by his fellow Super Junior members and many fans, and he is sometimes called "sculpture man" because his body appears "perfectly chiseled out." His fans also comically refer to his abdominal muscles frequently as "chocolate abs." He is also the tallest among Super Junior members along with Zhou Mi from Super Junior-M, standing approximately 183 centimeters tall.

 source google and wikipedia