I'm not a fan of online novels. I'm just a person who likes to read novels. As for whether Blazing Teens will have a sequel, I can't give an accurate answer. It seems that there is no official announcement that there will be a sequel to this work, so I can't provide any information about it. If you want to know more about Blazing Teens: The Legend Reappears, you should go to the relevant novel websites or social media platforms to search.
Trollhunters: A Story Reborn is real in the context of the fictional world it creates. It's not based on actual events but offers an engaging and fictional narrative.
If Yo - Yo was captured, it could lead to some interesting character development for the other agents. Fitz and Simmons could be pushed to develop some new gadget to help in the rescue. Daisy might be forced to confront her own fears about losing her friend and use her powers more aggressively. Also, the captured situation could be a setup by a new villain who wants to lure the rest of the team into a trap. The villain might be after the secrets of SHIELD that Yo - Yo knows.
The 'hide yo kids, hide yo wife' is a phrase from a viral video. A man named Antoine Dodson was interviewed after his sister was the victim of an attempted sexual assault. His very animated and passionate reaction in the interview, where he said things like 'Hide yo kids, hide yo wife' became extremely popular and was remixed and spread all over the internet.
In a Jim x Morgana fanfiction, it could start with Morgana being trapped in a magical prison created by the Trollhunters long ago. Jim, out of his sense of justice and curiosity, decides to visit her. As he gets closer, he realizes that Morgana has a complex past and motives that are not entirely evil. Their interactions could then develop into a strange friendship that the other Trollhunters might not understand.
One idea could be that the characters from 3 Below end up in Arcadia Oaks where the Trollhunters are. They could team up to fight a common enemy that threatens both their worlds. Maybe the Gumm - Gumm trolls somehow form an alliance with the bad guys from 3 Below's planet, and the combined forces of the heroes have to stop them.
In addition to them, there are some other significant characters. For instance, Strickler, who has his own motives and secrets. He is a complex character who sometimes helps and sometimes causes trouble for the Trollhunters. And there are various troll characters with different personalities and abilities, each playing a role in the story's development, like Draal, a powerful troll who also has an important relationship with Jim.