BX (비엑스)
- Stage Name: BX (비엑스) / Byounggon (병곤)
- Birth Name: Lee Byoung Gon (이병곤)
- Chinese Name: Li Bingkun (李柄鹍)
- Position: Leader, Main Rapper, Vocalist
- Birthday: 5th March 1998
- Blood Type: A
- Height: 180 cm (5'11")
- Weight: 61 kg (134 lbs)
- Nationality: Korean
- Zodiac Sign: Pisces
- SoundCloud: BE:XXX