BTOB 4U Members Profile: Facts & Ideal Type BTOB 4U (비투비 포유) is the second sub-unit of BTOB. Consisting of 4 members: Eunkwang, Minhyuk, Changsub, and Peniel. The name means “For you” and also refers to how there are four members in the unit. They  made their debut on November 16, 2020 with their first … Continue reading BTOB 4U Members Profile