Oh, you mean Mugo can control the gummies..? But then why Lord Mugo is disgusted by the gummies and Sir Mugo just made the gummies disappeared..?
In chapter 21 if u look closely the gummies turn into centipedes so i believe thats the reason y Lord Mugo is disgusted and Sir Mugo made them disappear
I do realize that, so the gummies are probably a creature that brings bad luck and shaped like centipedes, okay... Then I think the reason why Sir Mugo made them disappear is to not let such harmful creature be near Jaheon, but why is Lord Mugo disgusted tho, since he could control it anyway..?
Mugo can control them, no wonder they love the uke so much. I bet they can feel his emotions or something