A future Ki-Gor revival
The legendary Ki-Gor franchise currently survives mostly in reprints and is in a desperate need of an onscreen adaptation. The stories are becoming public domain within the next few decades for both Australia and the European Union, plus Nigeria and Japan. Ki-Gor is himself trademarked by his current rights holder. Given how fantasy driven the book series is, a future manga adaptation will have its own different continuity for legal reasons. Ki-Gor himself is an errand in this variant, while Ann becomes a spy. Unlike in the novels, they both have twins named Chris and Rue. Do bear in mind that fellow jungle themed characters from Fiction House are also in a crap ton of legal limbo.