JBJ, MXM, and Jung Se Woon were recently spotted by fans on their way back from 'Weekly Idol' filming, and it's now been revealed that Samuel Kim was also present. All 10 idols are trainees from 'Produce 101' season 2, all ranking within #12-#29. 

SEE ALSO: [Interview] Ask anything and everything: Send us your questions for Minzy!

The episode will air in November, so keep your eyes out for it!