Dumbledore would be an amazing crossover. His wisdom and power are so great. In Storybrooke, he could act as a sort of guiding figure for the characters. He could help them understand the deeper magic at work in their town, and maybe even teach some of them about the more noble aspects of magic, which could be different from what they already know in their fairy - tale world.
I think Michael Corvin could be an interesting crossover character. He's a hybrid in the Underworld series, which means he has a unique set of abilities. In the Harry Potter world, he could be seen as a strange new kind of magical being. He might be able to help the wizards understand different types of magic that are more physical and instinct - based like his own. Also, his journey of self - discovery in the Underworld could be paralleled in the wizarding world as he tries to find his place among the wizards and witches.
Severus Snape could also be a great crossover. His sardonic nature and his skills in potions could translate well in Bioshock. He might be interested in the way ADAM is created and used. He could also use his Occlumency skills to hide from the more dangerous inhabitants of Rapture. His complex character would add a lot of depth to the story, as he could be a reluctant ally to Harry in this strange new world or have his own hidden motives for being there.
Hermione. She's intelligent and resourceful. In the Tangled world, she could use her knowledge of spells and potions to solve problems. For example, she could brew a potion to make Rapunzel's hair grow even longer and stronger if it was damaged in some way.
Hermione would be really interesting. She's smart and resourceful. In The Walking Dead world, she could use her vast knowledge of spells and potions to come up with unique ways to deal with the walkers. For example, she might brew a potion that repels the walkers or use a spell to make them temporarily blind so the group can escape.
I think Hermione would be really interesting. She's so intelligent and resourceful in the Harry Potter world. In Highschool of the Dead, she could use her vast knowledge of magic to come up with unique solutions to deal with the zombies. She might even find a way to communicate with them or understand their 'nature' through her research skills.
Hermione would be really interesting. She could bring her intelligence and knowledge of magic to the iCarly crew. Imagine her helping Freddie with his tech projects using magic, or teaching Carly and Sam some basic spells. It would be a great contrast between the magical and Muggle worlds.
It could be Aquaman. He is so different from the wizards in the Harry Potter universe. His fish - like abilities and his role as a king would make for some great interactions with the Hogwarts students and professors. He could teach them about the ocean and its secrets, while also being amazed by the magic of wands and potions.
Percy would be really interesting. His ability to control water and his laid - back yet brave personality would contrast well with the more formal wizarding world. He could make some really funny and unexpected interactions with the Hogwarts students and teachers.
Severus Snape could also be an interesting choice. His double - agent nature in the Harry Potter series could translate well into the Assassin's Creed world. He could be a spy within the Templars or use his potions knowledge to create new substances for the Assassins, like a potion that enhances stealth or a poison for their blades.
Darth Vader and Voldemort would make an extremely interesting combination. Their dark powers and thirst for domination are quite similar. The way they would interact, whether they'd form an alliance or be at odds, could create a very engaging storyline.