This is really late, but I just wandered over to the artist's pixiv and discovered how he came up with this image (no, not hallucinogenic substances). Apparently ES Toys, a Japanese online toy store, once made a goof when doing the listing for a Snow White figure. The first half of the item description was as per normal, but the second half got replaced with part of the description for an MG Gundam, probably the RX-78-2 Ver.Ka. The replaced text reads "Armament included: beam rifle, two beam sabers, hyper bazooka, shield. Leg propulsion tubes are made using mesh piping."