Buck and Kuji were a couple. From the plot and interaction between Captain Barker and Goki, it could be seen that there was a relationship between them. In some documents, they were described as having an intimate relationship, and Captain Buck would care and protect them. Although the content of the document in the search results was a little scattered, it could be seen that Buck and Kuji had a special relationship. They might be an official couple.
Yes, Benjamin Barker is often associated with the character Sweeney Todd in the story. In the traditional tale, Benjamin Barker was a barber who was wrongly sent away by a corrupt judge who then took his wife. Barker returns under the name Sweeney Todd and seeks revenge. He teams up with Mrs. Lovett, who uses the bodies of his victims in her meat pies.
Since I'm not familiar with Nigel Akkara, it's difficult to tell his life story. Maybe he is a local figure in a specific community or has a story that is yet to be widely shared.
A common theme is their relationship development. It could be them starting as strangers and gradually becoming friends or allies. Another theme might be their shared goals. For instance, they could be on a quest to save their world or achieve something important together.
Another theme could be human nature under pressure. In his short stories, characters are often faced with extraordinary situations, and through their responses, Kneale shows different aspects of human nature, like fear, courage, and the will to survive.
One common theme is friendship. Most fanfictions explore how Nigel and Isaac become friends, support each other, and have a great time together. Another theme could be self - discovery. They might learn new things about themselves through their interactions.
Adventure is another theme. They could be on a quest to find a lost KND weapon or to stop a new enemy. In these stories, Nigel's intelligence and Rachel's courage work together to overcome obstacles. Many fanfictions also explore their growth as characters within the KND universe, how they become better agents and better friends through their experiences.
I'm not sure who Nigel Shelby specifically is without more context. It could be an ordinary person with a unique story, or perhaps a local figure known within a certain community.
Another reason could be that Phineas Nigel Black is simply a good - hearted character in these fanfictions. He recognizes Harry's struggle and decides to use his power and knowledge to give Harry a hand. He might see Harry as a symbol of hope for the future of the wizarding world and thus is compelled to assist him.