Cosplay Crush 

Someone you like because of the person they cosplay.

I have a cosplay crush on this guy because he dressed up as Link at a convention.

Cosplay Crush by thatcoolkidemil February 22, 2011

Crash Cosplay 

Verb;

1. To cosplay a character unrelated to the convention/event's theme.

2. To cosplay an original character

Oni-chan is crash cosplaying an anime character to the gaming convention! He's so cool!
or
Do you think anyone will know who we are if we crash cosplay western comic characters to the anime con?

Crash Cosplay by Loli Chan December 5, 2013