The main cast of Agents of Shield (except Phil) were co created by Jed Whedon, Joss Whedon and Marissa T. Daisy Johnson was created before the show, but iirc Chloe's character was originally called Skye.
Anyway, residual fees/character fees shouldn't be such a concern if Marvel Studios really want to use AOS characters. Just read this new SHH article, Marvel aren't really paying comic book writers.
Here's what Mike Deodato Jr., the co-creator of the upcoming Ironheart series, recently shared about his pay issues with Marvel.
www.superherohype.com