Lee Dong Yoon is a South Korean singer, dancer, and former member of TAESAJA (태사자). He graduated from Woodbridge High School and later obtained a bachelor's degree in Visual Arts from Pai Chai University.

He debuted in October 1997 as the group's vocalist and rapper with their first single, "Do", and the fans and media were quick to put them in a rivalry with NRG. Sadly, after a meteoric rise, the band suddenly faced disbandment in late 2001 as their agency, Masscom (매스컴), suffered many financial problems that ultimately caused the end of the group.

After the group's disbandment, he hardly did any entertainment activities, and there were suspicions of draft dodging as he used to live in the United States (while he studied in high school) and moved back to California to open a restaurant, but he was never formally accused.

He re-appeared on TV in 2019 when he reunited with his former groupmates of TAESAJA in an episode of "Two Yoo Project Sugar Man Season 3" but has not featured as a guest in any other show since.

(Source: MyDramaList) Edit Biography