Certain characters have huge booms in mainstream popularity, resulting in a dramatic increase in the number of cosplayers of all skill levels covering them. This sometimes gives particular characters a bad cosplay reputation, especially for characters like Harley Quinn and Deadpool, whom some cosplayers use as excuses to violate con etiquette "in character".
To be clear, this is not an indictment of those that cosplay as these characters for more genuine reasons. Characters are often popular because people connect with them, and that's a great reason to cosplay. Just remember that playing a troll doesn't free you from all the rules. Gauge whether your actions are making others genuinely uncomfortable, and stop if they are. I guarantee you'll find others who will happily play along.
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