What is cosplay? Cosplay is the art of dressing up in costume as a hobby. It does not include actors dressing for a theater performance, motion picture, etc., dressing for activities such as a traditional ceremony, costume ball, Halloween, etc., though a Halloween costume can also be cosplay. Cosplayers often participate in fandom gatherings, contests, presentations, and photo shoots. They often act in character during thesr activities as a presentation. Usually, canon characters from a popular animated or live action series are portrayed, but cosplayers may also dress as an original character they created themselves. In addition to simple enjoyment as a form of play, the purpose of cosplay is usually to honor and celebrate the character, work, style, or genre portrayed.