User blog comment:Jacknapier10/Which characters cannot appear in the Marvel Cinematic Universe?/@comment-34930433-20181106202308

Deadpool, any mutant, Fantastic Four or any F4 character e.g. Agatha Harkness, Spider-Man shouldn't be able to but can, any toy that they published in the last century e.g. Barbie, ROM, I don't think Namor - despite being an original Marvel character, he's adapted with the F4, so, y'know... Skrulls No, Latvantia, Atlantis can't as they're stuck with Dr. Doom and Namor and in recent years, Victor Von Doom became Iron Man - they don't have rights to that character, either.