Line Friends are featured characters, invented by South Korean designer Kang Byeong Mok, based on the stickers from diverse applications of the South Korean internet search giant Naver Corporation and the Japanese messaging app Line.
BT21 is the first presentation from FRIENDS CREATORS, a project formed to create new characters for the Line Friends series. South Korean boy group BTS was the first artist of this project and the main theme of the project is to show the connection between BTS and Line Friends in terms of popularity in the world. It comprises eight special characters created by South Korean boy group BTS. The character designs were based on original ideas and sketches by the group’s members.
Videos of BTS designing BT21 were uploaded to the official BT21 channel on YouTube.