Another interesting concept is a story where the Guardians have to protect Hogwarts from a new dark threat. The Guardians, with their unique powers, team up with the Hogwarts students and teachers to fight off the evil. For example, Jack Frost could use his ice powers to create barriers, while the wizards use their spells.
A more complex idea would be a fanfiction that delves into the backstories of both universes. It could explore how the magic in the Harry Potter world and the magic of the Guardians are related at a deeper level. For instance, perhaps there was a long - lost connection between the two worlds that was severed long ago, and the fanfiction could be about rediscovering and restoring that connection.
Maybe there could be a crossover where some of the magical creatures in the Harry Potter world are being influenced by Pitch from Rise of the Guardians. So, the Guardians and the Hogwarts students have to work together to stop Pitch from using these creatures for evil. Hermione could use her research skills to figure out how to reverse the influence, and Tooth Fairy could help heal any injured creatures.
You could write a fanfiction where Tooth Fairy has to go on a solo mission to a far - off land to retrieve a special tooth that has the power to restore the health of all the fairies in her realm. Along the way, she discovers new things about herself and her powers.
One interesting plot idea could be the Guardians of Power having a secret mission to protect a long - lost magical artifact that has a connection to Harry Potter's past. Maybe it's an ancient spellbook that could change the balance of power in the wizarding world.
One idea could be that the Hogwarts Guardians are a secret group within the school that protects a hidden magical artifact. They have to face off against a group of dark wizards who are also after it.
One idea could be exploring Pitch Black's past in more detail. Maybe he had a friendship before he turned dark that could be rekindled in the fanfiction. Another idea is to have Pitch Black team up with the Guardians against a new, even greater threat.
One idea could be exploring Jack Frost's past before he became a Guardian. Maybe he had a family or a life that he doesn't remember. Another idea is to create a new villain that challenges the Guardians in a different way than Pitch. For example, a villain who can manipulate time and mess with the memories of the children the Guardians protect.
In a fanfiction, the characters from 'Young Justice' could accidentally stumble into the realm of the 'Rise of the Guardians'. There, they are mistaken for enemies at first. But as they start to understand each other's motives, they realize they need to work together. For example, Superboy could learn a thing or two about controlling his powers from Jack Frost, while Jack Frost could learn about loyalty and teamwork from the Young Justice crew. This would be a great way to blend the two universes and explore different character relationships.
One interesting plot idea could be Hiccup befriending Jack Frost from Rise of the Guardians. Maybe they exchange their skills, like Hiccup teaching Jack about dragons and Jack showing Hiccup some cool ice tricks. Another could be that they team up to fight a common enemy that threatens both their worlds, like a dark force that can control ice and also enslave dragons.
One idea could be exploring Pitch Black's past before he became the villain. Maybe he had a family or a lost love that led him down his dark path.
A great crossover might involve the magic of Harry Potter being used to enhance the Guardians' weapons or ship. For example, Hermione could use a spell to make the Milano fly faster or make Rocket's guns more powerful. There could also be a plot where the Guardians help the Hogwarts students fight against a new dark force that threatens both the wizarding world and the galaxy.