The Manacle Hunter found in the first episode once belonged to his grandfather.
It would make sense for Digger Steele to leave the Manacle in a place he knew only people likely looking for the Inner World, would find it. If there ever is another season, it would involve the Spider Riders journeying to the Outer World.
Hunter could be given the chance to return to the surface world by the Oracle.- Originally, Hunter was going to be given the chance to go back home, but he would have ultimately chosen to stay in the Inner World.
Queen Illuma is Corona and Aqune's mother.
If you look closely, you can see the Queen often watching the pair as they played together as children.- At least in the Japanese, this is definitely false. She states that she only met them once, and doesn't even know Aqune's name.
Buguese will become the new ruler of all Invectids.
With Mantid gone, why not?