Though not EXPLICITLY part of Sunset System, this robot conveys many of the qualities one might expect from our universe. Perhaps they’re from a PARALLEL DIMENSION?
(Eggnogo’s work greatly inspired Ruby, and in turn Sunset System inspired this piece! How wonderful! If you’re into robot design and enjoy Sunset, you should take a look at their other art too.)
(Use of this image was confirmed with the artist, since it's not explicitly in the Sunset verse.)