Well, obviously Naruto himself. Their interaction would be really fascinating as Naruto could see his future son and Bolt could see his father as a young man. Also, Sasuke would be a great character to interact with Bolt. Sasuke's skills and his complex personality would create some really intense scenes when interacting with Bolt.
One possible plot could be that they are on a mission together in a dangerous situation. As they face numerous challenges and rely on each other for survival, their bond deepens. In a moment of intense relief after narrowly escaping death, they share a spontaneous kiss. It could be a story about two characters from different backgrounds coming together through shared experiences.
Black Bolt's leadership role in the Inhumans can also be a great starting point for OC fanfiction. For instance, an OC could be a new recruit that Black Bolt has to train. This could lead to a story about mentorship, growth, and the challenges of leading a group of diverse individuals with different powers and personalities.
One of the best Black Bolt stories is when he uses his powerful voice in a strategic way to save his people. His voice, which can cause destruction, is a unique aspect of his character, and stories that revolve around him controlling this power are always interesting.
One of the best Black Bolt stories is his origin story which shows how he became the powerful Inhuman he is. It delves into his upbringing in Attilan and the discovery of his voice's destructive power.
I'm not sure specifically which 'Husky Bolt' real story you are referring to. There could be many things named Husky Bolt. It might be a product's story, or perhaps related to a person or an event named Husky Bolt. More context would be helpful.
One great Bolt Naruto fanfiction is 'Bolt's Adventure in the Hidden Leaf'. It shows Bolt exploring the village his father once protected, facing challenges and making new friends. It has a really engaging plot that keeps you hooked from start to finish.