From 'Kuroinu', a character like Celestine could be a focus. If combined with the soldiers from 'Band of Brothers', she could be the key to understanding the magic and power dynamics in 'Kuroinu'. Her relationship with the 'Band of Brothers' characters could be a central part of the fanfic, whether it's a friendship, an alliance, or something more complex.
Another option could be Ronald Speirs. His mysterious and tough - as - nails personality would make for an exciting character in a 'Kuroinu' - like setting. He could be the one who is not afraid to take on the most dangerous foes in 'Kuroinu' and his actions could drive the plot forward.
One idea could be a crossover where characters from 'Band of Brothers' find themselves in the world of 'Kuroinu' and have to adapt to the new and dangerous environment. They could use their military training to form a resistance against the dark forces in 'Kuroinu'.
Richard Winters is one of the most memorable. His leadership and calm under pressure are remarkable. Another is Lewis Nixon. His friendship with Winters and his own character quirks make him stand out.
Ema Hinata is often a central character. Since she is the main female character in the original work, many fanfics tend to focus on her relationships with the brothers. Subaru Asahina is also quite popular. His passionate and sometimes brash personality can create interesting storylines in a lemon fanfic.
Thor would likely be a main focus. Given Waititi's work on Thor: Ragnarok, he could further develop Thor's character in the context of Infinity War, showing more of his growth and his humorous side in the face of the great threat.
Definitely Catherine Cawood from Happy Valley. Her strong - willed and no - nonsense personality would be really interesting in the Twilight universe. And from Twilight, Edward could be a key character. His brooding nature and vampiric abilities would create an interesting dynamic with Catherine. Also, Bella could be included as she might learn a thing or two from Catherine about being independent.
Richard Winters was a key character. He was a very capable leader. His decision - making and leadership skills were crucial for the Easy Company. Another important one was Lewis Nixon. He was Winters' friend and also played an important role in the company's operations.
Band of Brothers is indeed fiction. Although it's inspired by real World War II events and the experiences of soldiers, it incorporates fictionalized characters and plotlines to make for an engaging narrative.
Naruto and Sasuke are often the main focus. Their complex relationship, which has elements of rivalry and deep - seated friendship, can be easily molded into a 'band of brothers' dynamic. They are both powerful shinobi with different outlooks on life, and in fanfiction, they can come together in a more united front, facing challenges side by side like brothers would.
Alya is also a great character to feature. Her intelligence and strategic thinking can be useful in different crossover scenarios. If crossed over with a science - fiction world, she could be involved in advanced technological research or battles against alien invaders.
The eldest brother could be a great character to focus on. He's usually the leader among the brothers, so exploring his thoughts and decisions would be interesting. For example, how he decides which bride is right for which brother and how he manages the family as new brides come in.