Yes, there are some out there. You can start by looking on fanfiction websites like Archive of Our Own or FanFiction.net. Just search for 'Transformers Prime Jack x Solus Prime' and you'll likely find a variety of stories with different takes on their relationship.
Adventure is a big theme. Since Jack is often thrust into the world of the Transformers in the series, fanfictions tend to continue that trend. He and Solus Prime might go on quests or face threats together. Also, themes of mutual respect and understanding between their two species are quite common as they learn from each other.
Well, it could be about how Jack and Solus Prime meet. Maybe they cross paths during a battle and immediately feel a special connection. Then they start to discover more about each other's personalities and values, which deepens their love.
Jack is likely to be a character who has his own story arc outside of this love story as well. Solus Prime might be a more powerful or mysterious figure. Their combination in this fanfiction makes for an interesting pair as the main characters.
The idea of Jack being a Star Killer in Transformers Prime fanfiction is quite an interesting and rather unorthodox one. In the normal context of the series, Jack is just a human ally to the Autobots. But in fanfiction, the sky's the limit. Some fanfic writers might use this concept to introduce a new and exciting conflict. For example, if Jack were a Star Killer, it could create a huge rift between him and the Autobots, who are generally protectors. This could lead to a complex and engaging story full of moral dilemmas and intense battles as the Autobots might have to decide whether to stop Jack or try to redeem him.
Yes, he could be in certain fanfictions. Fanfiction allows for a lot of creative freedom. Maybe the writer wants to show Jack's journey from being a Unicron fan to realizing the true nature of this evil entity. It can be a great way to explore character development. Or perhaps it's part of a more complex plot where Unicron has some sort of allure that Jack initially falls for, but then has to make a choice between his newfound interest and his loyalty to his Autobot friends.
One idea could be to write about how the other Autobots react to Jack being hurt. For example, Arcee might become extremely protective and vow to find whoever or whatever caused the harm. She could go on a solo mission to seek revenge while the other Autobots try to keep Jack stable and safe at their base.
Well, if we consider a fanfiction with Transformers Prime, Jack and Star Wars, it's possible that Jack somehow ends up on a planet in the Star Wars galaxy. There, he meets some droids that are strangely similar to the ones in Transformers Prime in terms of their functions. He then tries to find a way back home while also getting involved in the local politics and power struggles, much like the heroes in Star Wars do.
There could be an exciting fanfiction where Jack meets Diobot. Maybe it would start with Jack exploring an unknown area and stumbling upon Diobot. Their encounter could be filled with suspicion at first, as Jack is cautious about new Cybertronians. But as they start to communicate, they might find common goals, like protecting the Earth from other threats.
In fanfiction, the possibilities are endless. Regarding Jack from Transformers Prime being a Batman fan, it could be a really cool concept. Imagine Jack looking up to Batman as a symbol of justice and using some of Batman's strategies in his own encounters. He might be inspired by Batman's use of gadgets and apply that thinking to his interactions with the Autobots. For example, when they're facing a difficult situation, Jack could draw on Batman - like tactics to help come up with a plan. But again, this all hinges on the creativity of the fanfiction writer.