Okay so maybe you haven't met any of these Imposters, well let's just say you did. You are walking around and you see this awesome cosplay like spot on outfit that looks like the exact character and you ask for a pictures. You know the whole point is to have fun,make new friends and all that. Well it's a bit awkward to had that moment when you try and make a comment about the character and talk about the manga or episode they were in and the person cosplaying them have no idea what you are referring to. Yes I had this awkward moment once! It was ....bad. It was just a complete disaster and awkward for a long while when they bring you mood down just because they have an outfit of a character you know of and they don't know anything other than they 'had a cool power,' or 'hey they were with the main character so I like them because blah blah blah.' Can you please use more detail....like we are talking about how awesome you look you have a perfect face and buld for the character I don't understand. Just tell me two things you know about the character that isn't the obvious like hair color or who they were hang with in season 2!
All I'm saying is that if you cosplay. Take the time to do some research while you are laying up in you hotel room eating ramen noodles and watching the last 3 episode of Dragonball Z because you are making it awkward for the rest of the people to associate with you!
My expression when I see the Impostor walking around lie they know something.