Each door represents a personality of Hyung. The 12 people are his 12 personality. Look at the door. Every door represents the personality, the flower head already knew about the 12 friends. It also means that Hyung is someone ho has so many personality and he brings one out whenever the situation calls for it. Now, it depends on which personality Doyonoug would choose cause practically there's absolutely no way to say one is fake cause every single one is real.