In the latest episode of On Display, Mattel Headquarters opens its doors for a never-seen-before look at its over 1,000,000 square footage of original He-Man toys, original Barbie collectibles and ultra rare Hot Wheels grails. He-Man actor and star of the new film, "Masters of the Universe", Nicholas Galitzine takes host Joe La Puma on a tour of the facilities, along with Mattel product experts and designers who helped create some of the most sought-after items, including the very first Barbie doll and sewing machine, a Hot Wheels prototype valued at more than six figures and legendary Castle Greyskull playsets. On Display is a show from Complex about collections. From lunch boxes to race cars, host Joe La Puma takes us inside the homes and private spaces of celebrities to see some of the most fascinating collections in the world.