Jessica Nigri is an American cosplayer, promotional and glamour model, YouTuber, voice actress, and fan convention interview correspondent. She has been cosplaying since 2009 and modeling since 2012, having served as an official spokesmodel for several video games and comic book series, including Lollipop Chainsaw and Assassin's Creed IV: Black Flag. She is also notable for her voice work as Cinder Fall in RWBY.

Cosplay, a portmanteau of "costume play", is an activity and performance art in which participants called cosplayers wear costumes and fashion accessories to represent a specific character. Cosplayers often interact to create a subculture, and a broader use of the term "cosplay" applies to any costumed role-playing in venues apart from the stage. Any entity that lends itself to dramatic interpretation may be taken up as a subject. Favorite sources include anime, cartoons, comic books, manga, television series, rock music performances, video games and in some cases, original characters. The term is composed of the two aforementioned counterparts – costume and role play.