Comments of chapter undefined of My sister was a Disney fan, now I am going through hell.

What movie is this dragon burrow related to? Pete's dragon? Quest for Camelot? It can't be sleeping beauty that would be too soon (seeing how his sister is sleeping beauty). Mushu from Mulan while a dragon isn't really big enough to make a dragons burrow. Are there any other Disney movies with wild dragons in it to make a dragon burrow? let alone one that has a metal man in it? or is this an original part of the story for the mc to meet more mimics as well as learn more about his peeps?