I know that this is boring to some, but I've been digging deeper into the whole IP bog (is using both 'boring' and 'digging' a mixed metaphor?)
I found some interesting (to me at least) articles on the copyright vs trademark issues with character protection here:
https://escholarship.org/uc/item/03z7d1h2 (warning: it's 1999, USA and at times quite heavy going) and here
https://open.mitchellhamline.edu/cybaris/vol6/iss1/3/ (still USA but more up to date: as with all law works, there's a lot of duplication of cases etc).
Neither deal explicitly with figs but the following extracts may be of interest and seem to pretty-well destroy any defence of the
'well it's just a C18th pirate who just happens to look like Johnny Depp (or Keef?)' ilk.
First, bear in mind that there are two different protections involved: copyright which expires 70 years after the creator dies and trademarks which last indefinitely (as long as they are in commercial use). There is also the right to publicity which protects the use of an individual's image whether in character or not (as does EU privacy legislation).
Del may need to click on the thumbprints
This covers the use of component parts/elements of a character (BS-D's top hat and tinted specs?)
This is about the actors' rights to their image
This covers various aspects of costume and appearance
This is about how an out of copyright character (eg Dracula) can be re-born and enjoy new life due to subsequent, new, development
And, just to show how complex this can get, take the case of King Kong (M C Cooper originated the character):
BTW: I think you'll find that the above extracts count as 'fair use' of (c) material