Captain America is an obvious choice. Their long - standing relationship in the original Marvel universe provides a rich backdrop for a crossover. You can explore their friendship or the times when they were on opposite sides. Black Widow is also great. She has a history with the Winter Soldier, and they can team up or have some sort of conflict in a crossover. Another good character to pair with him is Hawkeye. Hawkeye's skills as an archer and his different moral compass compared to the Winter Soldier can create interesting dynamics.
Well, the Winter Soldier could be paired with Ant - Man in a crossover fanfiction. Ant - Man's ability to shrink and grow could be used in some really creative ways in a story with the Winter Soldier. They could be on a mission where the Winter Soldier's combat skills and Ant - Man's unique abilities are both needed. Another character is the Wasp. She could bring her own set of skills and a different perspective to a story with the Winter Soldier. Also, Vision would be a good character to pair with the Winter Soldier. Vision's android nature and his connection to the Mind Stone could create some deep and thought - provoking interactions with the Winter Soldier, who has his own complex mental state.
One character that would be interesting to pair with the Winter Soldier is Loki. Loki's mischievous nature and his ability to manipulate situations could lead to some really complex and engaging storylines. He could either be an ally or an adversary to the Winter Soldier. Scarlet Witch is another option. Her powers are very different from the Winter Soldier's more physical and combat - based skills. They could interact in a way where she tries to help him with his mental traumas using her powers, or they could be at odds if their goals don't align. And don't forget Iron Man. His high - tech gadgets and his often - brash personality could clash or cooperate with the Winter Soldier in a crossover.
For 'dark winter soldier fanfiction', Falcon could be an interesting character to pair with the Winter Soldier. Falcon has his own set of skills and a strong moral compass. He could help the Winter Soldier navigate the modern world and his newfound freedom. Also, Scarlet Witch would be a fascinating pairing. She could potentially help him deal with his traumatic memories through her powers. And Bucky could also be paired with Doctor Strange. Strange could use his magic to help Bucky understand and control the dark forces within him.
Lucy Heartfilia could be paired with Zancrow. She has a different set of abilities and a more diplomatic personality. Her interactions with the hot - tempered Zancrow could lead to some interesting character development for both. She might try to reason with him or use her celestial magic in unexpected ways against his fire attacks.
Link from The Legend of Zelda could be paired with iskandar. Link is a skilled fighter, and iskandar could learn from Link's agility and stealth. In return, iskandar could teach Link about large - scale battle tactics. Also, Alucard from Hellsing would make an interesting pairing. Alucard's dark powers and iskandar's noble leadership would create a contrast, and they could either be enemies or allies depending on the story.
Ken Kaneki could be a great character to pair with Yamori. Their different outlooks on life and their shared experiences in a harsh world could create some intense and thought - provoking interactions.
Black Widow would be a great character to further involve. She has a complex past and her skills could add more depth to the story. Sam Wilson, too. His friendship with Steve could be explored more, and he could play a key role in helping Bucky adjust to the modern world. Another good addition could be Agent 13. She could be involved in some sort of undercover mission related to the Hydra secrets that are still out there.
In crossover fanfiction, pairing Josuke Higashikata with Light Yagami from Death Note would be an interesting choice. The contrast between Josuke's heroic nature and Light's more morally ambiguous actions would create a lot of tension. Another good pairing could be Eren Yeager from Attack on Titan. Eren's drive to protect his people and Josuke's ability to use Crazy Diamond in combat could result in a powerful alliance. Also, Saitama from One - Punch Man. Saitama's overpowering strength and Josuke's unique Stand abilities could lead to some comical and action - packed scenarios.
Sherlock Holmes could be an interesting choice. Imagine the brilliant detective trying to figure out Grell's reaper nature and Grell being both fascinated and annoyed by Holmes' deductions. Their interactions would be full of intellectual sparring and comical misunderstandings.
I think Duncan and Zuko from Avatar: The Last Airbender would be a great pair. Duncan has that rebellious and tough - guy attitude, and Zuko has his own complex journey of redemption. They could bond over their edginess and learn from each other's growth arcs. Another good pair could be Lindsay and Stitch from Lilo & Stitch. Lindsay's ditzy but kind - hearted nature would contrast with Stitch's chaotic but loving personality. They would make for some really funny and heartwarming interactions.
Luffy from One Piece could also be a good pairing. Luffy's carefree and adventurous nature combined with Urahara's mysterious and intelligent personality would create a fun dynamic. They could be on a quest to find a special treasure that has both spiritual and pirate - related significance.
White and Kaneki from 'Tokyo Ghoul'. White's power and her connection to Leo could play an interesting role when paired with Kaneki's ghoul powers. They could both struggle with their dual identities in a crossover scenario, and perhaps find a way to coexist or fight against a common enemy together.