Who would be the most interesting character interactions in a 'Harry Potter meets Harley Quinn' fanfiction?

The interaction between Hermione and Carlisle would be really interesting. Hermione is super intelligent and always eager to learn, and Carlisle is a very old and knowledgeable vampire. They could have deep discussions about the nature of life, death, and immortality. Hermione might be fascinated by how Carlisle has managed to retain his humanity over the centuries, while Carlisle could be intrigued by Hermione's vast knowledge of magic and her strong moral compass.

Definitely Harry and Wednesday. Harry is used to the rather normal, if magical, world of Hogwarts, while Wednesday is all about the dark and macabre. Their meeting would be full of contrasts. Harry's sense of right and wrong might be challenged by Wednesday's more amoral view of the world.

Definitely Harry and Tamaki. Harry is this serious and often burdened hero, while Tamaki is this over - the - top, dramatic and flamboyant host. Their interactions would be full of misunderstandings at first. Harry might not understand Tamaki's excessive theatrics, and Tamaki might be completely intrigued by Harry's mysterious past and the fact that he's a wizard.

Definitely Harry and Gaster. Harry is used to the magic in his world, while Gaster has his own set of abilities. Their meeting would be full of confusion, curiosity, and perhaps a bit of wariness. Another interesting interaction could be between Hermione and Gaster. Hermione would be eager to learn about Gaster's knowledge and would probably bombard him with questions.

Definitely Harry Potter and Rias. Rias is used to leading and being in control, but Harry has his own strong sense of justice and leadership. Their interactions could be full of power plays and mutual respect as they try to figure out how to work together.

Dumbledore and Merlin would be a fascinating pair. Two powerful and wise wizards from different times. They could exchange ideas about leadership in the magical world, how to guide young wizards, and strategies for dealing with dark magic threats.

I think the interaction between Bruce Banner and Hagrid would be fascinating. Hagrid is used to dealing with all kinds of strange creatures, but the Hulk would be something entirely new. He would probably be both scared and intrigued. Also, Bruce and Snape could have an interesting dynamic. Snape's brooding and often misunderstood nature might resonate with Bruce. Snape could be interested in the scientific aspects of Bruce's transformation, while Bruce might be able to see through Snape's tough exterior to the good in him.

Definitely Harry and Rachel. Rachel is so ambitious and Harry has his own heroic journey. Their interactions could be about achieving their dreams. Harry could learn from Rachel's drive in the performing arts world, and Rachel could be inspired by Harry's selfless heroism.

I think an interaction between Iron Man and Hermione would be really interesting. Iron Man is a genius with technology, and Hermione is a brilliant witch with a thirst for knowledge. They could exchange ideas about how magic and technology could be combined. Maybe Iron Man would be impressed by Hermione's quick thinking and ability to solve complex problems with just her wits and a wave of her wand.

Definitely Harry and Tsuna. Tsuna is a bit of a timid character at first, and Harry, with his courage and magical skills, could really inspire him. They could learn a lot from each other, like Tsuna learning magic from Harry and Harry learning about the unique family bonds in the 'Reborn' world.