Board Thread:General Discussion/@comment-26687285-20150905125650/@comment-25692211-20150907163429

Demoted To Extra Syndrome. It happens in films and stories when a character who was a main character in the previous story has a significantly smaller role in this one. A good example is Cyclops in the 2nd and 3rd X-Men films, and the Genie in Aladdin and the King of Thieves.