Real Name: Park Jungsu (박정수/朴 正 秀)
Position: Leader, Vocalist, Rapper
Nickname(s): Angel without Wings (날개잃은천사), Gaeteuk (개특, named by Heechul), Special Leader (특별한리더), Peter Pan, Ori (오리 aka Duck)
Date of Birth: July 1, 1983
Place of Birth: Seoul Yeonshinnae
Height: 178 cm/5′ 10.1″ in (said on Star King that his real height without shoelifts is 175 cm/5′ 9″)
Weight: 59 kg/129.8 lb
Blood Type: A
Siblings: older sister Park Inyoung (1982)
Specialty/Hobby: Piano, Composition, Listening to music, Singing
Education: Transferred from Paekche Institute of the Arts to Inha University
When Leeteuk and his older sister, Park Inyoung, traveled to Myeongdong for a holiday in early 2000, he was recommended by a talent scout to audition for SM Entertainment's Starlight Casting System. After several test recordings and performances, he signed with SM Entertainment and became a trainee.
That same year, he appeared as an extra in the MBC Korean drama All About Eve, and briefly as a model for Pepsi in 2002. In 2003, he was put into five-member boyband Smile, with future bandmate Donghae and aimed to be a rival group of TVXQ.
Leeteuk officially debut as part of 12-member project group Super Junior 05 on 6 November 2005 on SBS's music programme Popular Songs, performing their first single, "Twins (Knock Out)". Their debut album SuperJunior05 (Twins) was released a month later on 5 December 2005 and debuted at #3 on the monthly MIAK K-pop album charts. In March 2006, SM Entertainment began to recruit new members for the next Super Junior generation. However, this was met with fans' objections and strong opposition to the rotational style (much like popular rotational groups in Japan's pop music industry) that the group intended to be.