Lee Jae Jun, also known as Marcus and formerly known as Maru, is a South Korean singer, dancer, former member of C-CLOWN (씨클라운) and TREI (트레이) and current member of the duo JT & MARCUS (제이티 앤 마커스) and TAN (티에이엔). He graduated from Heungdeok High School and is enrolled at Cheongju University.

He became one of the youngest idols to debut at the age of 15 when, in 2012, he became C-CLOWN's lead rapper, lead dancer, vocalist and maknae with their 1st mini-album "Not Alone" (using the stage name Maru). The group was managed by Yedang Entertainment (now known as Imagine Asia, 이매진아시아). In 2015, the agency announced C-CLOWN was disbanding, so he decided to leave the agency. He began using his birth name, and in 2017, switched agencies.

Originally formed as a duo alongside Chae Chang Hyun, he re-debuted in 2017 as TREI's leader with their digital single "Up". The agency, Banana Culture Entertainment (바나나컬쳐 엔터테인먼트), decided to restructure the group and added a third member in 2018 and re-debuted as a trio in 2019 with their first mini-album, "Born". Unfortunately, the group was not successful and disbanded in mid-2020.

In 2021, he joined MLD Entertainment (MLD 엔터테인먼트) and re-debuted once again, now as part of the duo JT & MARCUS (alongside former TREI member Jun Tae or JT) with their 1st single, "Dear You". They occasionally release a new single and have provided an OST for the drama "Going to You at a Speed of 493 km".

Later that year, he entered the singing survival show "Extreme Debut: Wild Idol" and finished in 5th place, earning a spot in the project group TAN as the main dancer, sub-vocalist and visual. He signed a two and a half year contract with Think Entertainment (생각엔터테인먼트) and debuted in March 2022 with their 1st mini-album "1TAN".
However, the agency became embroiled in several controversies and all members ended their contracts in June 2024. The group has not disbanded but is now on an indefinite hiatus while some members fulfill their mandatory military service and others focus on other activities.

He made his acting debut by appearing in the BL web story "CityBoy Log" (시티보이로그).

(Source: MyDramaList) Edit Biography