He graduated from North Gwinnett High School, and before going to South Korea in order to participate in the third season of the reality competition show K-pop Star, Park was a part-time worker at a restaurant located near Duluth.

[4] Bernard Park first gained recognition in South Korea by winning on K-pop Star Season 3 in its final episode which aired on April 13, 2014, beating out fellow Korean-American singer Sam Kim.

[6] On August 9, 2014, Park participated in the JYP Nation concert "One Mic" which was held at the Jamsil Indoor Gymnasium in Seoul.

[13] On April 4, 2016, Park released the digital single titled "With You" (니가 보인다), which was a duet with Wonder Girls member Hyerim.

[15] On June 21, 2017, Park announced that he would be promoting himself in his future activities with his Korean name, Nakjoon, in conjunction with the first reveal of his new song "Blame" featuring rapper Changmo.

[19] The single was supported with the pre-release track "Sleep Mode", which was released in both Korean and English on October 7 and was written by labelmate Young K of Day6.

[20] On December 7, it was first announced that Nakjoon would be enlisted for his mandatory military service as an active duty soldier, having given up his US citizenship in order to do so.