I remember seeing a post on reddit about a possible Destro (I think?) rat motif, including a tattoo somewhere. Sounds like it might actually be some pretty clever English!
Yeah the mouse/rat is the Liberation Army's emblem (with the text "One of Them"), found on Destro's shoulder during the Gentle monologue.
(](https://twitter.com/CDCubed/status/966056257017798657)he did turn out to be Japanese, of course. but that speculation was over a year ago…)