Real Name: Kim Jongwoon (김종운/金 鐘 雲)
Position: Main Vocalist
Nickname(s): Cloud (구룸), Dog (from the Zodiac), Rabid Dog (광견; Heechul’s nickname for Yesung)
Date of Birth: August 24, 1984
Place of Birth: Chunahn in Southern Choongchung Province (충남 천안)(충청남도 천안)
Height: 178 cm/5′ 10.1″
Weight: 64 kg/140.8 lb
Blood Type: AB
Siblings: younger brother Kim Jongjin (1987)
Pets: a turtle named Ttangkkoma (땅꼬마 which means ’small runt’) since 12/4/08; he mentioned on “Olnbam” that it cost him 200,000 won (~$150).
Specialty/Hobby: Singing, Listening to music, Exercise
Education: Chungwoon University , Broadcast Music major, possibly transferred to Sunmoon University; reportedly graduated in early 2009.
In 2001, Yesung's mother signed him up to audition for SM Entertainment's Starlight Casting System, in which he impressed the judges with his "artistic voice", and signed as trainee under SM Entertainment that same year.