From the Harlequin's show and how similar the monsters are to the main characters, excluding the Protag, I imagine that the monsters are the actual representations of Pierrot and Harlequin (And Maybe the mentioned Jester?)
I thought similarly, but the monster, represented, by the color red, which would be Pierrot, doesn't appear in the Harlequin's show. Maybe it's just a missing detail.
Well, they both hate each other a lot (but also if you look at the monster with the yellow/gold eyes and look at Pierrot’s they have the same exact ones)
Yeah, i didn't think about it. Considering that Pierrot gives the protagonist a golden star brooch, not a red one, it would be reasonable to think that his color is yellow. Thanks for clarification Octaneflare.