Jareth is a really mysterious and powerful dude operating the display it seems. All the goblins concern him and follow him, and he is challenged by no one till Sarah arrives. However, if you really watch most of his "magic" is apparently style of... missing in influence, wouldn't you say? https://charlierixl35864.madmouseblog.com/20467615/the-linguistic-foundation-what-is-a-türk-sahibe