Wei 웨이 is the main rapper of UP10TION.
Wei was born Lee Sungjun 이성준 on Saturday, June 8, 1996, in Hyewong-dong, Seoul.
Like fellow members Kogyeol, Bitto, Wooshin, and Sunyoul, he was born in the Chinese Year of the Rat. He’s a Gemini. Wei, Kuhn, Bitto, and Hwanhee’s blood type is O. At a height of 185 cm or 6'1", he’s UP10TION’s tallest member. He’s taller than the shortest member, Jinhoo, by 12 cm.
He speaks English. He has a younger sister.
Wei was the second to last member to join the group.