Romanized: Bi Seu Teu
Former name: B2ST (Boys To Search For Top)
Nickname: Pet-dol (Pet Idols), Beast-dol (Beastly idols)
Debut Date: October 15 2009 (debut showcase), October 16 2009 (Music Bank debut stage)
Members (6): Yoon Doojoon (Leader) (1989), Jang Hyunseung (1989), Yong Junhyung (1989), Yang Yoseob (1990), Lee Kikwang (formerly known as AJ) (1990), Son Dongwoon (maknae) (1991)
Label: CUBE Entertainment l Universal
Official webite: www.playb2st.com
Official Fanclub: B2UTY (pronounced as BEAUTY)
International Fansites: b2strising.com
Member
Name: Yoon Doojoon
Nickname: Thunder Thigh, Rockhard Thigh
Birhtday: July 4, 1989
Position: the oldest, Leader, rapper, vocalist
Height: 180cm
Weight: 67kg
Blood Type: A
Specialities: singing, rapping, playing soccer
Cyworld: http://www.cyworld.com/enwns89
Name: Jang Hyunseung
Nickname: Rancho/Lancho, Eye Prince
Birhtday: September 3, 1989
Position: vocalist, dancer
Height: 177cm
Weight: 58kg
Blood Type: B
Specialities: singing, dancing (mostly popping and locking), beatboxing, working hard
Cyworld: http://www.cyworld.com/jgms
YOZM: http://yozm.daum.net/cbhs00
Name: Yong Junhyung
Nickname: Bald Junhyung, Antler Head, Yongjun Hyung, Yong Goon
Birhtday: December 19, 1989
Position: rapper, dancer (sometimes he sings too)
Height: 179cm
Weight: 64kg
Blood Type: O
Specialities: dancing, rapping, writing lyrics (mostly for his own parts)
Cyworld: http://www.cyworld.com/JKer89
Name: Yang Yoseob
Nickname: Yang mini cooperzu, Yang Yo, shikshin (God of Food), endorphin
Birhtday: January 5, 1990
Position: vocalist, aegyo master
Height: 174cm
Weight: 56kg
Blood Type: B
Specialities: singing, eating
Cyworld: http://www.cyworld.com/diddyja
Name: Lee Kikwang
Former Stagename: AJ (Ace Junior)
Nickname: Dumb Kwang, Kiwi, Pelvic Bone Kikwang, Holly Z
Birhtday: March 30, 1990
Position: vocalist, dancer
Height: 174cm
Weight: 58kg
Blood Type: A
Specialities: singing, dancing
Cyworld: http://www.cyworld.com/human-tree
Name: Son Dongwoon
Nickname: Son Arab, Son Seuko, 16D
Birhtday: June 6, 1990
Position: vocalist, maknae
Height: 181cm
Weight: 64kg
Blood Type: A
Specialities: singing
Cyworld: http://www.cyworld.com/sohndw
