Board Thread:Questions and Answers/@comment-11836-20170208210806/@comment-61022-20170322200940

The rights issues with some of these characters is somewhat unique....

The Micronauts - Some of these characters are Marvel creations. Arcturus Rann, Marionette, and Bug are owned by Marvel. The licensed characters are any characters based on the Micronauts toyline. Which is not many (Baron Karza, Acroyear, Biotron and Microtron for example)

Rom - Only the character Rom is not owned by Marvel, all of the other characters (Including the other Spaceknights) are owned by Marvel. Although IDW has made the primary antagonists in their Rom comic the Dire Wraiths, who knows what's going on there :\

Shogun Warriors - I think the licensing issue here only applies to the giant robots, and maybe some of the monsters. The Shogun pilots however, are Marvel owned.

There are a lot of public domain characters missing from this list. Notably, various literary characters who have appeared in Fantastic Four: True Story Vol 1 and Deadpool: Killustrated Vol 1.

Then if you want to go into actual real life people, there are many many actors, politicians, and public figures that appear in various Marvel publications. However, I should point out that all of the ones that appear in the Modern Age should be considered Topical References over anything else.