He is well known for his affiliation with the West Coast division of Grindtime and his participation in Jumpoff's 2007 World Rap Championships; both of which have given rise to his status as a strong web presence.He did a stint as the opening act for Epik High's Map the Soul tour.They debuted in Korea in January, 2004 under SM Entertainment label with the single "Hug", and in April, 2005 in Japan under rhythm zone label with the single "Stay With Me Tonight".
Since 2006, Kero One has topped i Tunes hiphop charts in USA, Asia and Europe, received praise from the likes of Emmy award winning producer Will.i.am, and toured all over the world.
Kero One has shared the stage with artists like KRS 1, Blu Exile , DJ Cash Money, Dj Kentaro, Far East Movement, and Epik High (where Kero One participated in arguably the first successful sold out Asian-American hiphop tour).
Starred in the movie titled 'White' Cast in the 2011 K-Drama 'Queen Insoo' Was in the variety show 'We Got Married' with Lee Jangwoo Cast in the 2012 Drama titled "Five Fingers" Appeared in 2009 drama Queen Seon Duk. My School Cast in the 2012 Drama titled "Haeundae Lovers" Birth Name: Jeon Bo-ram (전보람) Date of birth: March 22, 1986 Position: Vocalist Released solo EP in 2008 titled From Memory.
Appeared solo on the cover of Ceci Magazine in October 2009. Appeared in T-ara & Supernova's TTL (Time to Love) music video Cameod in 2010 movie Death Bell 2. Birth name: Park In-jung (박인정) changed to Park Soyeon Date of birth: October 5, 1987 Position: Main Vocalist Won Gold in 2005 CMB Chin Chin Music Festival competition. Original Leader of Girls' Generation, but left before debut due to personal reasons Participated in the project group T-ara & Supernova for the song TTL (Time to Love) Starred in KBS Invincible Baseball (2009) Appeared in 2010 drama Giant. Released Digital single in 2008 titled Lucifer Project Vol 1.
The next month, T-ara regrouped to become a 6 member group and released their debut single "Geojitmal" (Korean: "거짓말" lit.