Wow, I have a theory, if it's been made, it's been made into a manga.... Not always officially but almost always there is a manga around for any given franchise... But let's disregard the myriad of fan-made manga and take a look at some of my finds today which may show the beginnings of a great "western scavenger hunt"
Here is my theory:
Take any given western (USA) property
Google search it with Manga at the end
See what happens
PROOF THIS WORKS
G.I. Joe The Manga
It may be fun to find out just how much manga based on western franchises we can find as a community!
Manga must be OFFICIAL-There are a lot of fan made manga out there, but let's limit finds to actually licensed manga alone, though feel free to show fan made manga for fun to a degree
Marvel Mangaverse-We already know about it, dont bother posting that you found a marvel related manga unless it predates mangaverse