Well, perhaps Spyro discovers a magical portal in his world that leads to Hogwarts. Once there, he becomes a sort of mascot for Gryffindor because of his brave nature. The students try to learn from Spyro how to better communicate with magical beasts, as he has a special connection with them. Meanwhile, Voldemort or one of his followers might see Spyro as a threat and try to capture him. Harry and his friends then have to protect Spyro and in the process, learn more about Spyro's world and its magic.
Obviously, Harry Potter himself would be one of the main characters. He could be the one to first encounter Spyro and start the whole adventure. Spyro would also be a main character, with his unique abilities and personality. Hermione could also play a big role as she would be very interested in learning about Spyro's world and how his magic works. And Ron, with his loyalty and sometimes comical nature, could provide some light - hearted moments during the more serious parts of the story.
Once upon a time in the magical world where Crash and Spyro both exist. Crash was running around in his jungle when he accidentally tumbled through a strange portal. He found himself in Spyro's dragon realm. Spyro, being the friendly dragon he is, greeted Crash. Together, they decided to explore a new, mysterious land filled with both the challenges Crash was used to, like crazy masks, and the treasures Spyro loved to seek. They overcame many obstacles, and their friendship grew stronger with each adventure.
Sly Cooper would be a great addition. Sly's sneaky, thieving skills could add an element of stealth to a Spyro crossover. He could help Spyro steal back a precious artifact that has been stolen by their common enemy, using his lock - picking and acrobatic skills.
A prevalent theme is redemption. Since Cynder has a dark past, many fanfictions focus on her journey towards redemption with Spyro's help. Also, the theme of power is common. They might discover new powers or learn to better use their existing ones in the stories. For instance, in some fanfictions, they combine their powers to defeat a greater evil. Moreover, the exploration of their dragon heritage is also a recurring theme, which helps in understanding their characters more deeply.
One idea could be a crossover with Crash Bandicoot. Spyro could find himself in Crash's world, facing the same villains Crash does. They could team up to defeat Dr. Neo Cortex who has some evil plan involving both their worlds. This would bring a lot of action and humor as the two very different characters interact.
One possible plot could be that Spyro, with his fire - breathing and flying abilities, gets transported to the world of FFXV. He could team up with Noctis and his friends. Spyro might use his skills to help them fight off some of the daemons that plague their land. For example, Spyro could quickly fly over an area and spot a group of daemons approaching, allowing Noctis and his gang to prepare for battle.
Sure, it's quite possible. Fanfiction writers love to blend different fictional worlds. In a 'The Mummy (2017)' and 'Harry Potter' crossover, we could see the mummy's powers being pitted against the spells of Hogwarts students. Maybe the mummy is brought back to life in the wizarding world and causes chaos. There are endless possibilities for interesting storylines in such a crossover fanfiction.
One idea could be that Tinkerbell finds her way into the wizarding world of Harry Potter. Maybe she gets accidentally transported there by some magical mishap. She could use her fairy magic in Hogwarts, like helping to repair broken objects in a more sparkly and unique way compared to the Reparo charm.
A popular one is 'Fem Harry and the World of Middle - earth'. This fanfic is really interesting because it crosses over the Harry Potter universe with Tolkien's Middle - earth. Here, Fem Harry has to adapt to the very different cultures and magic systems in Middle - earth, and there are some great character interactions that add depth to the story.