MobCi is a R&B/soul/ballad vocal trio from H&A Entertainment. They debuted in 2014. I know a lot of the artists in these articles don't have a lot of information on them, but it's even worse with this group since they went silent for two years. No comebacks, no social media activity. They only started posting again around the time Mixnine started airing, but I can't even confirm whether it was them who joined or if their company (if they are still active) was using their social media to promote another labelmate.