Feeldog I feel like he would watch your performance to the end and then go backstage to praise you on how well you did.
Euijin "She got her dancing skills from me!" I think he would admire how you perform on stage and tell you that you did a very good job.
Daewon This little angel would be super proud of your performance. He would visit you backstage and let you know you did a wonderful job.
Marco Wow she's good at rapping and singing and dancing. He would admire everything you did on stage. He would go visit you after your done and give you his cute eye smile.
Hojung "Damn she's good" He would wink at you and smile once you guys make eye contact.
Hansol She's good. He will be super proud of your performance but catch fans eyeing you. He'd get jealous but try not to show it.
Jun "That's my girlfriend!". I feel like he would proudly let everyone know that your his girlfriend.
Chan "Go y/n!" He would cheer for you and give you a thumbs up after the performance.
Kijung He would be super proud of you and give you ton of heart signs.