Lee Eui Jin is a South Korean singer, dancer, stage actor, former member of A.CIAN (에이션) and UNB (유앤비) and current member of BIGFLO (빅플로). He attended Seoul Comprehensive Arts Practical School but is on a leave of absence. Before debuting he was part of a dancing crew that specialized in popping called DA'ONEZ.

He debuted in October 2014 (under the stage name Lo-J) as A.CIAN's leader and main vocalist. The group debuted in September 2012, but Wings Entertainment (윙즈 엔터테인먼트; formerly known as ISS Entertainment) began making several lineup changes, so he was added for the promotion of the single album "Ouch". However, the constant lineup changes and the financial instability, made him leave the group and the agency in October 2015.

After switching agencies, he re-debuted in 2017 by joining BIGFLO (the group had debuted in 2014) as the new leader (following Jung Kyun's mandatory military enlistment), vocalist, rapper and main dancer with their EP, "Stardom."

Later that year, he entered the singing survival show "The Unit" and finished in 2nd place, earning a spot in the show's project group. He re-debuted in April 2018 as part of UNB with their first mini-album, "Boyhood". The group was represented by PocketDol Studio (포켓돌스튜디오), but they were not able to negotiate an extension to their contracts, and UNB disbanded in January 2019.

In 2019, he debuted as a soloist with the album “e:motion” and also announced that BIGFLO was on indefinite hiatus so the members could focus on their individual careers.

In 2022, he made his debut as a theater actor with a role in "Yeodo."

(Source: MyDramaList) Edit Biography