The nation of Mimas is:
* Not the son of Gaia (who is one of the Giants slain by Heracles)
* Also not a son of Amycus and Theona, so definitely didn't escorted Aeneas to Italy
* Certainly not a genus of Hawk moths, definitely not the Lime Hawk-moth
* Nothing to do with the Mima mounds, as for example found on the Mima Prairie
* Unrelated to the national data centre at The University of Manchester
* and is not even on the same page as the Danish band Mimas
Mimas is in fact called after a moon of Saturn (which obviously itself is likely to be called after either the first or 2nd ones on this list, but what do I know, it just sounded ok).