Toei Robot Girls

A pilot film streamed on the anime studio Toei Animation's website. The female leads in the film are dressed as various famous robots in Toei's anime catalog - the girls are personifications of robots in the Gaiking ("Gai-chan"), Magnerobo Ga-Keen ("Gacky"), and Superhuman Combat Team Baratack ("Bara-tan") and the newly added character is from the anime Planet Robot Danguard Ace.
(Source: Anime News Network)