Pentagon

Pentagon (펜타곤) debuted in October 2016 under Cube Entertainment through a reality survival format, launching as a ten-member group with an unusually high proportion of member-writers. Hui's songwriting became the group's most recognized non-performance output—his co-writing credit on Wanna One's Energetic, one of the biggest K-pop hits of 2017, brought him industry-wide recognition and gave Pentagon a kind of behind-the-scenes prestige that supplemented their artist profile. The group's own catalog—Shine, Sum(me)r, and Naughty Boy—demonstrated that the songwriting capability invested in Energetic was equally present in Pentagon's own material. Their ability to shift between energetic performance-focused tracks and quieter, more emotionally textured releases gave them flexibility that kept their catalog interesting across multiple eras. Pentagon remain active and are one of the more resilient groups from the 3rd-to-4th generation transition period. In the K-Pop Atlas graph, their Cube placement alongside (G)I-DLE and BTOB reflects a label approach that consistently developed songwriting-capable acts, and Hui's credit on Energetic creates a direct graph connection between Pentagon and Wanna One.