He and his teammates, as well as their counterparts from traditional athletic rivals Korea University, enjoyed a level of popularity similar to that of idol singers and A-list actors/actresses due to their skills and good looks.

Together with his Yonsei teammates Lee Sang-min and Woo Ji-won and Korea University's Hyun Joo-yup and Chun Hee-chul, among others, they were collectively dubbed "Oppa Troupe" (오빠부대) by the media.

[6] In 1994, Moon joined the Suwon-based semi-professional team of Samsung Electronics,[7] which famously scouted him and secured a contract with him before graduation.

In 2001, Moon signed with Incheon SK Bigs, now Daegu KOGAS Pegasus, and spent five seasons with the team.

He was appointed head coach of the Seoul SK Knights ahead of the 2012-13 season and led them to the KBL Championship five years later.

His former assistant and long-time national team and club teammate Chun Hee-chul took over from the 2021–22 season as Moon was assigned to a technical advisor role with the Knights.

[15] Since 2021, Moon has appeared in several variety shows alongside fellow retired basketball players such as Hyun Joo-yup, Hur Jae and Woo Ji-won.