Kim Ju Hyeon, later legally changed to Kim Seo Ul and currently known professionally as HENNEXXI, is a South Korean singer, dancer and former member of PRO C (프로씨) and MADTOWN (매드타운). He graduated from the School of Performing Arts Seoul. Before debuting, he spent 3 years as a trainee.

He made his debut in November 2013 (using the stage name Buffy) as part of the duo PRO C alongside Kim Sang Bae (known professionally as Moos) with the single "Bad Memory" ft. K.Will. In a curious strategy, J. Tune Camp (제이튠캠프) decided not to reveal their faces until January 2014 and later decided to integrate them into the agency's new group.

He re-debuted in October 2014 as MADTOWN's lead rapper and vocalist with their first album, also titled "Mad Town". The group enjoyed some initial success. However, the agency began facing financial problems and rumors of possible embezzlement and declared bankruptcy in early 2017. Their contracts were transferred to GNI Entertainment (지엔아이엔터테인먼트).

In September 2017, they filed a lawsuit to terminate their contracts, and the Seoul Central District Court ruled in their favor 2 months later, leading to their disbandment. He decided to leave the group just before the ruling was issued. He enlisted for mandatory military service on November 20, 2017, and was discharged on August 9, 2019.

After his release, he became an independent artist under the stage name HENNEXXI. He made his soloist debut in February 2023 with the single "RATM" ft. Hangzoo.

(Source: MyDramaList) Edit Biography