I support a lot of groups and artists to say the least, half of this show itself contains my bias's (which makes it extra hard on voting, so now I know what ya'll had to do during Peak Time lol). Please do not go further if you don't want spoilers or view the sub community for it.
I wrote an article on a different and its waiting to get approved to post and I can't promote other sites here, but here's what to know about Build Up, my favourite performances by my bias's and more here for those who are curious about the show since MNET is terrible and doesn't promote it properly!
Park JEUP (Of IMFACT) and part time barista), Did a really good stage that I hope gets officially uploaded, the performance was so good. He's been my bias for such a long time in IMFACT, I truly hope more people check his stuff out. Even if they are 'd b and ed' the members have stated that the group is still here and contacts each other often. (Similarly to how Pentagon how to assure fans themselves). Learn about IMFACT or facts about them here: https://kpopping.com/profiles/group/Imfact , https://kprofiles.com/imfact-members-profile/ (My Username in comments and author profile: StarlightSilverCrown2 & StarlightSilverCrown (Original account that I lost access to).
Jung Soomin is a somewhat newer artist from Chicago, who is pleasantly getting a lot of attention from the show itself, and has been featured in different fan edits since the show began. If you are interested in his music, or checking out who he is, I made a thread about him here: Jung Soo Min (Male, Singer) Debut/ Update Thread. JSM has made it to the 4th round of MNET's Build Up.
Lee Taehwan (Vanner) (Eliminated).
Yeo Chang Gu (YeoOne) (Pentagon). https://instagram.com/9oo_sebumps
