This is something I'd personally consider moving to Marvel Comics/Characters - we already have the Marvel Characters index for those who have their own series, so the red-linked subpage should suffice for the cosmology and other recurring characters that don't already fall within that index in my opinion.
Talk:Marvel Comics/Characters
I prefer it for the sake of logical structure in that you start with the trunk of the tree and then have branches. Start with the marvel page and then have a main character page with a fractal breakdown. It's also nice because not everyone is aware of every marvel series and title and doing this could have them click on a series they've never seen and lead them to something new.
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