Monkey King is also highly popular. His long and rich history in Chinese mythology gives a lot of material for fanfiction. Writers can explore his past adventures, his relationships with other mythological beings, and how he mentors MK.
One idea could be exploring MK's training in more detail. Show his struggles and how he overcomes them. For example, he might face a new and extremely powerful demon that forces him to master a new skill quickly.
One idea could be a crossover with other Lego themes like Ninjago. The Monkie Kid characters could team up with the Ninjago ninjas to fight a common enemy. For example, a powerful dark force that threatens both their worlds. They could combine their unique skills and powers, like Monkie Kid's staff skills and the ninjas' elemental powers.
One possible plot could be that the Monkie Kid characters accidentally end up in the Ninjago realm. They meet the Ninja and at first there are misunderstandings as they don't know each other's powers and motives. But then they realize they have a common enemy, like an ancient evil that threatens both their worlds. So they team up, with the Monkie Kid using his magic staff and the Ninja using their elemental powers to fight this great evil.
First, choose the other franchise or concept you want to cross over with. Then, think about how the characters from both will interact. For example, if it's a crossover with a superhero universe, consider how Monkie Kid's powers compare to the superheroes' and how they'd work together or against each other.
The characters would likely start off being cautious of each other. For example, the Ninja from Ninjago, who are used to their own ways of fighting and protecting their world, might be a bit wary of the Monkie Kid and his friends with their different powers. But as they face challenges together, like fighting a common enemy, they would start to respect each other's skills. The more talkative characters from both sides would probably be the ones to break the ice and start sharing stories about their respective worlds.
One possible moral could be about the importance of kindness. If the kid in the story shows kindness to the lion kid, it might teach that being good to others, regardless of their appearance or power, can lead to positive outcomes.
I'm not sure of the specific full story without more context. It could be a case of a bully targeting a vulnerable blind child, which is extremely cruel. There might be underlying reasons like the first kid having some behavioural problems or being influenced by a bad environment.