User blog comment:Jacknapier10/Which characters cannot appear in the Marvel Cinematic Universe?/@comment-5350299-20140430075914/@comment-3317214-20140501214230

Well, Man-Thing is a part of the MCU, but a name-drop on TV is very different to a film appearance. So, I don't know if Marvel has the rights or not. It wouldn't surprise me if they did, because there hasn't been talk of a Man-Thing movie that I've heard of for years...