The Legion of Extraordinary Dancers, commonly called The LXD, is an American web series that premiered on Hulu. The series follows two groups of rival dancers: the Alliance of the Dark, who are the villains, and the Legion of Extraordinary Dancers, the heroes, who discover they have superpowers referred to as "the Ra" through their dance abilities. The entire story takes place over hundreds of years, beginning in the 1920s, up to the year 3000.

The series was created, co-directed, and co-produced by Jon M. Chu, who says he was inspired to create it by Michael Jackson's "Thriller" and "Smooth Criminal" music videos and by the dancers he met while filming the movie Step Up 2 the Streets. The series was choreographed by Christopher Scott and Harry Shum, Jr., with assistant choreography by Galen Hooks. Members had a wide variety of specialties, including hip-hop, krumping, contemporary, tricking, popping, b-boying, jazz, tap, and ballet. All of the choreography and stunts were real. There were no special effects or wire work, and the entire series was shot on location without the use of green screens.

50% of the sales of the official LXD T-shirt went to support the work of the nonprofit organization Invisible Children, Inc.|group="fn"}} Puma was the lead sponsor for the series.