Oliver Queen from Arrow and Dean Winchester from Supernatural make an interesting pair. They are both strong - willed leaders. Oliver's combat skills and Dean's hunting skills could complement each other well. They could go on adventures together, fighting both the criminals in Star City and the supernatural creatures in the Supernatural world.
Felicity Smoak and Sam Winchester. Felicity is a tech - genius in Arrow, and Sam is very intelligent and well - read in Supernatural. They could work together to solve complex problems. Maybe Felicity could use her technology to help Sam research the supernatural, or Sam could teach Felicity about the lore of the supernatural world, which could in turn help her develop new technology for Arrow - related issues.
Daisy Johnson from Agents of SHIELD and Oliver Queen from Arrow would also be an interesting duo. Daisy has her Inhuman powers and combat skills, while Oliver is an expert archer and martial artist. They could fight side - side in a big battle against a powerful villain.
Definitely Castiel. Castiel has his own complex relationship with death and the divine in the Supernatural world. Pairing him with the Angel of Death would create a really interesting dynamic. They both have different views on mortality and the afterlife, which could lead to some great character interactions.
Arya Stark and Castiel. Arya is a skilled assassin with a thirst for revenge. Castiel is an angel who often struggles with understanding human emotions. Their interactions could be really fascinating. Castiel could help Arya understand the deeper spiritual side of her revenge, while Arya could teach Castiel about the importance of personal vendettas in the context of the cut - throat world of Westeros.
Definitely Percy and Dean. Percy has his quick - thinking and his water powers from being a son of Poseidon, while Dean is the tough, street - smart hunter. Their different personalities and skills would create an interesting dynamic. They could learn from each other, like Percy teaching Dean about Greek mythology and Dean showing Percy some of his hunting tricks.
Castiel and Danny would be an unexpected but cool pairing. Castiel is an angel with his own unique powers and view of the world. Danny's half - ghost nature would be something completely new to Castiel. They could have some really deep and strange conversations about the nature of life, death, and the afterlife. And when it comes to fighting enemies, their combined powers could be really effective.
Oliver Queen and Dean Winchester would be an interesting pairing. Oliver is a brooding, justice - seeking vigilante, and Dean is a tough, monster - hunting badass. They both have a sense of loyalty to their causes and a no - nonsense attitude. They could bond over their shared experiences of losing loved ones and their determination to protect the innocent.
Barry Allen is a very interesting character to write about. His super - speed gives a lot of scope for creative writing. You can explore how he experiences time differently, or how he uses his speed in unique ways to solve problems. Oliver Queen is also great. His dual identity as a playboy billionaire and a vigilante archer provides a lot of depth. Writers can delve into his internal struggles, like his fight against his dark side and his journey to become a better hero.
One interesting character to pair with Dark Seraphina would be a fallen angel like herself but from a different origin. They could share their experiences of losing their grace and try to find a way back together. A powerful sorceress could also be a great match. The sorceress could offer her magical assistance in exchange for something Dark Seraphina has, like a piece of her dark power. And a mysterious knight with a dark past could be paired with her. Their dark pasts could bond them as they fight against a greater evil that threatens their world.
The Road Runner could be an interesting character to pair with Rango. Their different styles of movement, with Rango being more of a swaggering walker and the Road Runner being super - fast, could create some really fun and comical interactions. Another great pairing would be with Shrek. The contrast between Shrek's ogre - like nature and Rango's lizard self would make for a great story of two misfits coming together.
Iron Man and Castiel would be an interesting pair. Iron Man with his high - tech gadgets and Castiel with his angelic powers. Iron Man could be intrigued by Castiel's ability to teleport and heal, and Castiel might be fascinated by Tony's technology. They could work together to fight a threat that combines technology and the supernatural, like a group of demons that are using stolen Stark tech.