Choi Seung-hyun (최승현), popularly known as T.O.P, is a South Korean rapper, singer-songwriter, actor, and music producer. He is regarded as one of the most iconic rappers in Kpop, idolized by fans and even celebrities across different generations. He rose to fame after debuting as one of the rappers of the legendary boy group BIGBANG. Together with his members, the became one of the best-selling groups of all-time in Asia and one of the best-selling boy bands in the world. In 2010, while the group was on hiatus, T.O.P and G-Dragon formed a duo to record and release the number-one collaboration album, GD & TOP. He also debuted as a soloist and released two digital singles: "Turn It Up" in 2010 and "Doom Dada" in 2013.
On June 5, 2017 it was announced following a tip from Han Seo Hee, T.O.P would be investigated for using marijuana. He was subsequently transferred to a different police division awaiting notice of prosecution, and would be suspended from police duty pending the verdict on his case.
On June 6, T.O.P was found unconscious in police barracks due to an anti-anxiety medicine overdose of prescribed benzodiazepine, and was hospitalized. On June 8, T.O.P’s mother confirmed that her son had opened his eyes and was recovering.
On June 29, at his first trial for the marijuana usage charges at the Seoul Central District Court, T.O.P pleaded guilty, admitting that he did smoke marijuana in four instances in early October 2016 and received two years of probation. T.O.P was eventually assigned reservist status by the Ministry of National Defense and transferred from the police department to complete his mandatory service as a public service worker. He resumed his mandatory service as public service officer at the Yongsan Arts and Crafts Center in central Seoul on January 26, 2018. Afterwards T.O.P was discharged on July 6, 2019.
On February 7, 2022, YG Entertainment announced that T.O.P had left the company after his contract ended. Despite of this, T.O.P will continue to be part of BIGBANG.