Completing a cosplay is no easy task, with some fans spending hundreds of hours on sewing, researching, painting detailed makeup looks, and in some cases, crafting extremely elaborate high-tech accessories in an attempt to emulate their favorite characters. But for every cosplay worthy of its own booth at Comic-Con, there are a million stinkers — just ask these dedicated — albeit slightly-less talented — fans. 

From a truly despicable Gru cosplay to Casper the uncanny ghost, here are 23 cosplay fails to ruin your fantasy.