These look like official Nintendo products, released long ago (1985-86, obviously), probably as some sort of cheap toy inside a Gachapon machine. They stand about 2.5 inches tall, and 2 inches wide, so they're really small and simple transformers. Too bad they're so simply (and goofily) designed. Nowadays, one could probably make an actual transforming, working Famiclone if there were actually the market for such a thing.