Build Up: Vocal Boy Group Survival is a South Korean reality competition show, where male vocalists ranging from current and former idol members, soloists, singer-songwriters, musical actors and individual trainees are competing to debut in a four-member vocal boy group. The 40 contestants are divided into four type of voice colors: , , , and . After the final episode, the final top four contestants were selected to debut as members of the boy band, B.D.U (Boys Define Universe).

Contestants The English names of contestants are presented in accordance with the official website.

Color key

+ List of Build Up: Vocal Boy Group Survival contestants Contestant Age Ranking 1 Ep. 2 Ep. 3 Ep. 4 Ep. 5 Voice Check-in # Votes # # # # Seunghun() 24 38 7 4 4 4 5 Jay Chang() 22 10 23 1 1 1 1 Bain() 22 37 9 18 18 19 17 Sunyoul() 27 8 24 15 14 14 14 Lim Jun-hyuk() 30 38 7 29 39 37 38 Jeong In-seong() 29 11 22 13 12 13 12 Kang Ha-yoon() 20 3 27 17 17 15 15 Choi Ha-ram() 22 21 14 30 35 36 34 Lee Min-wook() 23 33 11 38 26 29 37 Geonu() 22 33 11 10 11 12 13 Jeon Woong() 26 21 14 5 8 9 10 Wumuti() 24 24 13 3 3 3 3 Taehwan() 29 31 12 11 10 11 11 Lim Sang-hyun() 26 4 25 34 28 28 28 Park Ju-he() 18 24 13 27 23 22 23 Kim Seong-jeong() 24 4 25 26 27 31 31 Choi Su-hwan() 22 33 11 24 29 27 27 Kim Seo-hyung() 22 18 16 25 25 26 25 Lee Gwang-seok() 25 1 32 23 21 18 19 Lee Dong-hun() 30 16 18 2 2 2 2 Hong Sung-won() 25 14 21 20 22 25 26 Hyukjin() 30 36 10 19 19 21 24 Yun In-hwan() 26 24 13 40 31 23 22 Ji Yeon-woo() 19 19 17 28 37 40 39 Ma Jae-kyung() 27 31 12 32 33 32 30 Jo Hwan-ji() 28 16 18 31 34 35 35 Hong Seong-jun() 24 24 13 14 15 17 18 Taewoo() 26 4 25 36 32 39 29 Hwang In-hyuk() 25 11 22 39 30 30 32 Jung Soo-min() 19 4 25 21 20 20 20 Jang In-tae() 26 40 5 35 40 34 40 Jeong Yun-seo() 19 24 13 37 36 38 36 Neon() 28 24 13 16 16 16 16 Park Je-up() 30 2 28 9 9 8 6 Kwon Eui-bin() 24 8 24 33 38 33 33 Bitsaeon() 28 14 21 12 13 10 7 Kang Seok-hwa() 23 20 15 8 5 5 4 Lee Hwan-hee() 25 21 14 6 7 6 9 Kim Min-seo() 20 24 13 22 24 24 21 Yeo One() 27 11 22 7 6 7 8

Prior to Build Up

Voice Check-in (Episode 1) The Voice Check-in involved all the participating contestants to listen to each other's voice files and vote for the voice they want to build up with. The self-assessment is based on the votes of other 39 contestants.

Key – Allround – Soul – Power – Unique + Voice Check-in results Performance Contestant Self-assessment Performance Contestant Self-assessment Original artist(s) Song Original artist(s) Song Aired Unaired 4Men "Baby Baby" V2 23 votes Hwasa "María" V3 9 votes Choi Beck-ho "End of the Sea" V16 25 votes Shin Hyo-bum "You Are the One I Love" V5 7 votes H1-Key "Rose Blossom" V36 21 votes Day6 "Letting Go" V6 22 votes Exo "Miracles in December" V20 18 votes Johan Kim "I Want To Fall In Love" V8 14 votes (G)I-dle "Tomboy" V38 14 votes Eddy Kim "The Manual" V9 11 votes Acoustic Collabo "It's Strange, With You" V37 15 votes Jungkook "Seven" (Clean ver.) V12 13 votes Jay Park "Joah" V10 11 votes Park Hyo-shin "Goodbye" V13 12 votes Paul Kim "Rain" V1 7 votes Kim Yeon-woo "Parting Taxi" V14 25 votes Adele "One and Only" V7 27 votes Shinee "Stand By Me" V15 13 votes Crush "Rush Hour (feat. J-Hope)" V33 13 votes NEXT "Lazenca, Save Us" V22 10 votes Christopher "Bad" V11 14 votes Im Chang-jung "A Guy Like Me" V23 13 votes Zitten "Let's Stay Well" V40 22 votes Charlie Puth "Suffer" V24 17 votes Kim Feel "Someday, the Boy" V19 32 votes Kim Bum-soo "It Will Pass" V25 12 votes GB9 "Star" V34 28 votes Park Jin-young "Swing Baby" V26 18 votes Eagles "Desperado" V21 21 votes 10cm "Phonecert" V27 votes Paul Kim "Me After You" V18 16 votes John Park "Though of You" V28 25 votes Frankie Valli "Can't Take My Eyes Off You" V30 25 votes Ecobridge "The First Day" V29 22 votes Jaurim "Twenty-Five, Twenty-One" V4 24 votes BtoB "Missing You" V31 5 votes Wanna One "Energetic" V17 11 votes Taeil "Starlight" V32 13 votes Yoo Jae-ha "My Reflection in My Mind" V35 24 votes Adele "Rolling in the Deep" V39 13 votes

Pre-4 Mission (Episode 1–2) For the Pre-4 Mission, each contestant chose a song and formed a 4-member group to perform a single stage. The ranking on Voice Check-in has a big impact for this mission and if the song has filled with four members, the lower placed contestant must choose another song. Although it is a group mission, the evaluation is individual, and the most voted team member by the judges becomes the top tier and has the right to select the lower tier from the team.

Color key

+ Pre-4 Mission results Performance Contestants Result Original artist(s) Song Top Tier Middle Tier Low Tier Episode 1 1 BigBang "If You" Kang Ha-yoon Jay Chang Kang Ha-yoon Hong Seong-jun Geonu Jay Chang Hong Seong-jun Geonu 2 Sung Si-kyung "Every Moment of You" Hong Sung-won Seunghun Bain Jang In-tae Hong Sung-won Bain Seunghun Jang In-tae 3 Brown Eyes "Don't Go, Don't Go" Park Je-up Lee Dong-hun Neon Park Je-up Hyukjin Lee Dong-hun Neon Hyukjin Episode 2 4 Kim Dong-ryul "Saying I Love Again" Kim Seong-jeong Kim Seong-jeong Yeo One Yoon In-hwan Kim Seo-hyung Yeo One Kim Seo-hyung Yoon In-hwan 5 Hyukoh "Tomboy" Lee Gwang-seok Park Ju-he Hwang In-hyuk Jo Hwan-ji Lee Gwang-seok Hwang In-hyuk Jo Hwan-ji Park Ju-he 6 Hwayobi "Something Like That" Kwon Eui-bin Lee Min-wook Kwon Eui-bin Taehwan Ma Jae-kyung Taehwan Ma Jae-kyung Lee Min-wook 7 NewJeans "Ditto" Jung Soo-min Wumuti Jung Soo-min Kang Seok-hwa Jeon Woong Kang Seok-hwa Jeon Woong Wumuti 8 Park Hyo-shin "Breath" Jeong In-seong Choi Ha-ram Jeong In-seong Lee Hwan-hee Lim Jun-hyuk Choi Ha-ram Lee Hwan-hee Lim Jun-hyuk 9 Mamamoo "Décalcomanie" Sunyoul Choi Su-hwan Bitsaeon Sunyoul Ji Yeon-woo Bitsaeon Ji Yeon-woo Choi Su-hwan 10 Crush "Beautiful" Lim Sang-hyun Lim Sang-hyun Jung Yun-seo Taewoo Kim Min-seo Taewoo Jung Yun-seo Kim Min-seo

2 vs 2 Rival Mission (Episode 3–5) In 2 vs 2 Rival Mission, contestants formed a duet and competed against another duet. The top tiers from Pre-4 Mission can partner with anyone in all sections (Top, Middle and Low), the same matching rule applies with middle tiers but only to sections M and L while low tiers can only team up in their respective section. Another rule is the low tier contestant cannot refuse the top tier contestant's offer to form a team and if picked by more than two then the contestant could choose his partner. The duet with a higher judge score wins and the losing team is a candidate for elimination.

Color key

+ 2 vs 2 Rival Mission results Performance Contestants Team name Scores Original artist(s) Song Highest Lowest Total Episode 3 1 Shinee "Sherlock (Clue + Note)" Choi Su-hwan JeSu() 96 88 645 Park Je-up Jonghyun "End of a Day" Lee Dong-hun Hun Youl() 97 75 624 Sunyoul 2 Crush "Hmm-cheat" Seunghun 723 97 86 650 Neon Roy Kim "Take Me Back in Time" Yoon In-hwan Balladream 100 90 666 Ma Jae-kyung 3 Charlie Puth "Dangerously" Jay Chang Sweet and Salty() 100 97 693 Bitsaeon Harry Styles "Falling" Wumuti Golden Boys() 100 98 697 Kang Ha-yoon Episode 4 4 Ryeowook "The Little Prince" Jeong Yun-seo Trainees() 92 70 591 Ji Yeon-woo Blackpink "Kick It" Kang Seok-hwa Destiny() 80 60 505 Jeon Woong 5 Bumjin "A Letter" Kim Seong-jeong Black and Black 90 75 587 Lee Gwang-seok Bishop Briggs "River" Bain Black Fire 100 97 690 Kim Min-seo 6 Urban Zakapa "I Don't Love You" Hong Seong-jun I Don't Love You But I Love You 92 80 601 Kim Seo-hyung Crush "Don't Forget" (feat. Taeyeon) Jung Soo-min Soou() 95 86 636 Geonu Episode 5 7 Lucy "Play" Taehwan Cheers() 87 75 578 Hong Sung-won IU "My Sea" Yeo One rowspan="14" 91 75 579 Lim Jun-hyeok 8 Bolbbalgan4 "To My Youth" Choi Ha-ram 100 85 648 Hwang In-hyuk The Stray "Moon" Park Ju-he 90 80 607 Kwon Eui-bin 9 Lee Hong-gi and Yoo Hwe-seung "Still Love You" Jeong In-seong 87 65 543 Hyukjin EXO "Universe" Lee Min-wook 96 78 589 Jang In-tae 10 Taeyeon "Four Seasons" Jo Hwan-ji 79 69 515 Lee Hwan-hee I.O.I "Downpour" Lim Sang-hyun 100 85 641 Taewoo

Triple Death Match Mission (Episode 5–7) Color key

+ Triple Death Match Mission results Performance Contestants Team name Score Original artist(s) Song Episode 5 1 BtoB "Pray (I'll Be Your Man)" Choi Su-hwan JeSuSeung() 4 Park Je-up Seunghun Kiss of Life "Bad News" Bain rowspan="3" 3 Kim Min-seo Bitsaeon Episode 6 2 Choi Yu-ree "Forest" Lim Sang-hyun TaeNeSang() 1 Taewoo Neon Taeyeon "Drawing Our Moments" Choi Ha-ram Three Tofu() 6 Hwang In-hyuk Sunyoul 3 Big Naughty "Joker" (feat. Jamie) Jung Soo-min Taco Trio() 6 Geonu Kim Seo-hyung AKMU "Nakka" (with. IU) Jung Yun-seo Young Musician() 1 Ji Yeon-woo Park Ju-he 4 Park Jin-young "Fever" (feat. Superbee, Bibi) Wumuti All Vitamin() 4 Kang Ha-yoon Jay Chang Hoppipolla "Enough" Lee Min-wook Woong-iverse() 3 Jang In-tae Jeon Woong Episode 7 5 Jung Seung-hwan "An Ordinary Day" Yeo One My Gwang-seok() 4 Lim Jun-hyeok Lee Gwang-seok BTS "The Truth Untold" (feat. Steve Aoki) Yoon In-hwan Sofa() 3 Ma Jae-kyung Lee Dong-hun

One Team Mission (Episode 8) Color key

+ One Team Mission results Performance Contestants Team name Scores Original artist(s) Song Judges' vote On-site vote Pre-online vote Total 1 Woodz "Drowning" Jay Chang HunMinJayBit() 528 190 36 754 Bitsaeon Seunghun Kim Min-seo 2 Taemin "Guilty" Park Je-up The Partners() 561 254 26 841 Lee Dong-hun Bain Jeon Woong 3 Aespa "Drama" Sunyoul WaterFire 549 147 19 715 Choi Su-hwan Wumuti Kang Ha-yoon 4 Mark Ronson "Uptown Funk" (feat. Bruno Mars) Jung Soo-min Milky-Up 568 300 9 877 Geonu Kim Seo-hyung Choi Ha-ram 5 Park Hyo-shin "Gift" Lee Gwang-seok DoReMiFa() 538 93 10 641 Yeo One Lim Jun-hyeok Hwang In-hyuk

Semifinal Mission (Episode 9) Color key

+ Semifinal Mission results Performance Contestants Team name Scores Song Production credit Judges' vote On-site vote Pre-online vote Total 1 "Flower" Lyrics & Composition: Primsfilter Choreography: Monika, Heyjoo Jay Chang HunMinJayBit() 583 300 100 983 Bitsaeon Seunghun Kim Min-seo 2 "Lose Yourself" Lyrics & Composition: Primsfilter Choreography: Choi Young-joon, Yoo Seung-hyun, Kim Jin-wook Park Je-up The Partners() 544 262 39 845 Lee Dong-hun Bain Jeon Woong 3 "Someday" Lyrics & Composition: 1601 Sunyoul WaterFire 572 298 20 890 Choi Su-hwan Wumuti Kang Ha-yoon 4 "You&I" Lyrics & Composition: Pdogg Jung Soo-min Milky-Up 550 221 10 781 Geonu Kim Seo-hyung Choi Ha-ram

Final Mission (Episode 10) Color key

+ Final Mission results Performance Contestants Team name Scores Song Production credit Pre-online Vote Live Broadcast Vote Total 1 "Now" Lyrics: Building Owner, Glenn, Kim Seung-jun, Ohway! Composition: Glenn, Building Owner Arrangement: Building Owner, Kim Seung-jun Sunyoul WaterFire 122 291 413 Choi Su-hwan Wumuti Kang Ha-yoon 2 "Your Season" Lyrics and Composition: Score (13), Megatone (13), Luke (MonoTree) Arrangement: Park Junghoon Park Je-up The Partners() 407 762 1,169 Lee Dong-hun Bain Jeon Woong 3 "Hug Me" Lyrics and Composition: Park Woo-sang (Logos), Seo9 (Logos), Lee Ji-yeon (Kissmejoy) Arrangement: Park Woo-sang (logos) Jay Chang HunMinJayBit() 471 947 1,418 Bitsaeon Seunghun Kim Min-seo

Notes

References