Jung Ha Yoon, also known mononymously as Hayoon, is a South Korean singer, dancer and former member of MyB (마이비) and BONUSBaby (보너스베이비). She graduated from Korea Arts High School.

She made her debut in November 2015 when she joined MyB (the group debuted 3 months earlier) as the lead vocalist and maknae with their second single album, "DDODDO". Unfortunately, Maroo Entertainment Corp. (마루기획) has never had much success in promoting girl groups, and they disbanded in December 2016.

She remained with the agency and re-debuted in January 2017 as BONUSBaby's main dancer and lead vocalist with their first digital single, "Between Us". However, in September 2018, Maroo announced the group will go into an indefinite hiatus. Later, the company rebranded and began producing male idol group, GHOST9, so BONUSBaby officially disbanded in July 2020.

She appears to be out of the entertainment industry.

(Source: MyDramaList) Edit Biography