In Obi - Wan Kenobi crossover fanfiction, Qui - Gon Jinn is a common character to be paired with him. They could be in a crossover where they have to face a new and powerful enemy that requires both their skills and knowledge. Darth Vader (Anakin after his fall) is also often paired. This creates a very interesting dynamic as Obi - Wan has to deal with his former apprentice in a different context, perhaps in a world full of steampunk technology. Leia Organa can be paired with Obi - Wan too, where she learns more about her connection to the Force and her father from Obi - Wan in a crossover with a space - faring civilization different from the Star Wars galaxy.
I think pairing Obi - Wan Kenobi with Scarlet Witch would be really interesting. Scarlet Witch has her powerful magic, and Obi - Wan has the Force. They could learn from each other's abilities and powers. Maybe Scarlet Witch could help Obi - Wan understand some different aspects of magic that are similar to the Force, and Obi - Wan could teach her about self - control and discipline in using power.
Jon Snow could be one. He has a sense of honor and leadership, much like Obi - Wan. They could bond over their shared values and Jon could learn from Obi - Wan's wisdom. Another could be Daenerys Targaryen. She is on a quest for power and Obi - Wan might see her as someone who needs guidance to use her power responsibly.
Obviously, Obi - Wan Kenobi is one of the main characters. There might also be characters like Anakin Skywalker, as their fates are intertwined. And perhaps some Jedi Masters or other Jedis from the Order who interact with Obi - Wan.
Ezra Bridger would be a great character to pair with Obi - Wan. Ezra is still learning about the Force, and Obi - Wan could be his wise mentor, teaching him more advanced techniques and the true nature of the Force.
One interesting concept could be a crossover with the Star Trek universe. Imagine Obi - Wan using the Force in a world where technology and different species co - exist in a more scientific - based way. Another concept might be a crossover with the Lord of the Rings. Obi - Wan could bring his Jedi skills to Middle - earth and interact with the wizards and warriors there. Also, a crossover with the Harry Potter universe could be cool, with Obi - Wan teaching the young wizards about the Force which could be seen as a different form of magic.
One common theme is his training. It often shows how he hones his skills and learns about the Force. Another is his relationships, like with his master Qui - Gon Jinn.
Another theme is loneliness. Obi - Wan is often depicted as a solitary figure, dealing with his hurt alone. Fanfictions may show him isolated on a far - off planet, nursing his physical and emotional wounds, with no one to really understand his pain.
The author of the 'obi wan kenobi novel' is not something I can recall immediately. It would be a good idea to search for it in a library database or on a dedicated book - related website.
Madara is quite commonly paired with Hashirama in crossover fanfiction. Their complex relationship in the original Naruto series makes for interesting scenarios when they are placed in different crossover settings. They could be forced to work together against a new threat or their rivalry could take on new dimensions in a different world.
Gwen Tennyson is often paired with Ben 10000. Since they are related in the original series, it's interesting to see how their relationship might be different in a crossover scenario. Maybe they have to work together to save the universe in a more complex way than before.