Seong Hyun Woo, previously known as A.M and currently known as WOO, is a South Korean singer, dancer and former member of LIMITLESS. He graduated with a bachelor's degree in K-Pop from Dong-Ah University of Broadcasting and Arts. Before debuting, he spent 4 years and 7 months as a trainee at The Vibe label.

In 2017, he appeared as a contestant in "Produce 101 Season 2" but was eliminated in the earlier rounds and placed 61st overall. After the show, he moved to ONO Entertainment and joined his best friend, Jang Moon Bok.

In 2019, controversy emerged when producers Ahn Joon Young and Kim Yong Beom admitted to having committed fraud by altering the vote counts in all 4 seasons of the "Produce 101" series, so he was one of the trainees who was unfairly eliminated from the competition. Later that year, he made his official debut as the leader, main rapper, main dancer and vocalist of LIMITLESS with their 1st single, "Dream Play". However, the agency ran into economic trouble, and less than a year later, it ceased operations, leaving the group without a company. The members released a statement saying the group would not disband, but they have not released any music since then.

He debuted as a soloist in 2021 with the digital single "No Regrets", and in 2023, he announced he would now use the stage name WOO.

(Source: Korean = NamuWiki || Translation = MyDramaList) Edit Biography