The values of the two universes can be blended. In Harry Potter, friendship and loyalty are important. In WWE, there's a sense of sportsmanship and showmanship. A fanfiction could show how the characters from both worlds learn from each other in these aspects. For example, Harry Potter characters could learn how to put on a good show in the ring from WWE superstars, while the WWE stars could learn about the power of true friendship from the Potter crew. This would create a unique and interesting story that combines the two very different universes.
By having the characters cross over. For example, the Hogwarts students could attend a WWE event and get inspired to become wrestlers. Or WWE superstars could visit Hogwarts and learn about magic.
The 'Harry Potter Fire Lord' fanfiction can combine the two universes by creating a portal or a magical accident that transports characters from one world to the other. For instance, a spell gone wrong in Hogwarts could send a character to the world of the Fire Lord.
It can combine the two by having the characters cross over. For instance, Harry could be invited to MI6 to share his knowledge of dark magic as they face some sort of dark magical threat in the Muggle world.
It might also combine them by setting the Tetris game in the Hogwarts castle. So, instead of a plain background, you have the Great Hall or the Gryffindor common room as the backdrop for the game. The sounds of the game could be replaced with magical noises like spells being cast or the flapping of a hippogriff's wings.
In a Transformers Beast Wars and Harry Potter fanfiction, you could have the Transformer beasts being hunted by the Ministry of Magic because they are seen as dangerous magical creatures. Or perhaps some of the Hogwarts professors are interested in the advanced technology of the Transformers. For instance, Professor McGonagall might study the shape - shifting abilities of the Beast Wars characters and try to find similarities with Animagi. Also, the battles between the good and bad sides in both universes could be intertwined. The Autobots could team up with the Order of the Phoenix to fight against the combined forces of the Decepticons and Death Eaters.
It could use a portal or some sort of magic - tech device. For example, a magical experiment in the Harry Potter world goes wrong and creates a portal to the Marvel universe where Black Widow is. Or maybe a Stark Industries experiment accidentally taps into the magic of the Harry Potter world. This would be a simple and straightforward way to bring the two together.
One way is to think of Mirakuru as a power source that is discovered in the Forbidden Forest. A character in the Harry Potter series then uses it and has to learn to control it while also dealing with the regular magical threats. It's like adding a new layer of mystery and power to the existing magical system. The characters would have to adapt to this new power, and it could change the dynamics of their relationships. For instance, if Harry got the Mirakuru power, his friends might be both in awe and a bit afraid of him at first. They would have to figure out how to work with this new Harry. Also, the villains like Voldemort would see this new power as a threat or a tool to use for their own evil purposes. So, it really shakes up the whole Harry Potter universe.
They can combine in terms of magic systems. In some fanfictions, the powerful and often incomprehensible magic in the Cthulhu universe might blend with the more structured magic of Harry Potter. For example, a spell in Harry Potter might be corrupted by Cthulhu's influence and become a more dangerous and unpredictable force.
Yes, it is possible. In fanfiction, the boundaries between different universes can be blurred. For example, one could create a story where Harry Potter, as the Master of Death, somehow gets transported to the realm of Loki. Maybe Loki has a plan that involves Harry's power over death, or perhaps Harry is on a quest that leads him to cross paths with Loki. The magic systems in both universes could be intertwined in interesting ways. For instance, the magic in Harry Potter is more about spells and potions, while Loki has his own Asgardian magic. A good fanfiction could find a way to make these two types of magic interact, like Harry using his Patronus charm against one of Loki's illusions.
Fanfiction often uses crossovers to blend these two universes. It might start with a portal or some sort of magical accident that transports Ahsoka to the Harry Potter world or vice versa. Once there, the different cultures and technologies can be compared and combined. For instance, the use of lightsabers in a world full of wands can create really interesting scenarios. The fanfic writers also use the existing storylines of both universes. They might put Ahsoka in the middle of the fight against Voldemort or have Harry and his friends explore the Star Wars galaxy. This way, they can explore how the two universes would interact and what new stories could be created.
The combination in 'Watch Dogs MLP Fanfiction' is often through the concept of displacement. A character from Watch Dogs suddenly finds themselves in Equestria or vice versa. Then they start to interact with the elements of the new world. The Watch Dogs' tech - savvy characters might try to understand and even use the magic in MLP as if it were a new form of technology. And the ponies would be exposed to advanced technology which is completely foreign to them. This creates a lot of interesting scenarios for storytelling.