I am rather fond of the idea that every magical "court" has a theme. Some purview, if you will, that abstractly frames it. Jadis is, obviously, Winter. The Erlkonig is currently balancing somewhere between Summer, Forest, and Night. The Goblins are "unwanted".
Erik belongs to Leroux and Webber.
Jareth and Sarah belong to Henson, Lucas, Bowie and Connelly.
Norrington belongs to Disney, Bruckheimer, and Davenport.
Javert belongs to Hugo, Boublil, Schonberg, and Kretzmer.
Jadis belongs to Lewis.
Erlkönig is a mythological character and belongs to everyone and no one.