Board Thread:General Discussion/@comment-24949615-20160902102913/@comment-11836-20160911195131

Once Upon A Time has mostly public domain characters in it, and the series itself is made by ABC, so it's already under Disney. Kingdom Hearts... I don't know. While the Disney characters are obviously owned by Disney, the Square characters from games like Final Fantasy seem to be owned by Square. I assume it's similar to their deal with Roger Rabbit, and they only share credit, rather than fully own them.

Godzilla is owned by Toho, and they're really protective of their license. Shogun Warriors, I have no idea who owns them. Micronauts, ROM, G.I. Joe and Transformers are owned by Hasbro and have current comic series published by IDW Publishing.