Masters of the Universe is a popular media franchise created by Mattel that focuses on the various conflicts between He-Man and the evil Skeletor. The franchise takes place on the fictional planet Eternia where a variety of colorful characters appear throughout the ongoing battle between the two sides. Masters of the Universe gained popularity through an extremely successful series of toy lines, which continue to be sought be collectors to this day, along with various animated TV series and films which exapnded the franchises reach to a larger audience.