One possibility in this fanfiction could be that Jack's powers allow him to communicate telepathically with the Transformers. This would give him an edge in battles as he could quickly convey strategies without the need for words. Maybe his powers also include enhanced physical strength, enabling him to hold his own against smaller Decepticons. It could be a really interesting twist to his character, making him more than just a human ally but a powerful force on his own.
In the fanfiction, Jack's tail might be a part of a genetic experiment gone wrong. He wakes up one day and finds this tail. It causes him a lot of trouble at first, like getting caught on things. But then he realizes that it can be used as an extra limb in combat situations. He trains with the Autobots to master the use of his tail, and it becomes a secret weapon that the Decepticons are not expecting.
Jack could have the power of super speed. This would let him quickly move around the battlefield, delivering important messages or distractions. It would also be cool if he could use his speed to create mini - tornadoes to disrupt the Decepticons.
One plot idea could be that Jack discovers his new wings in a moment of danger. Maybe during a battle against the Decepticons, some sort of energy surge activates a latent ability in him and the wings suddenly sprout. This new ability gives him an edge in combat, allowing him to fly and perform aerial maneuvers that catch the enemies off - guard.
Another possibility is that Jack Darby has the power of super - speed. In the world of Transformers battles, this would be extremely useful. He could quickly run to the aid of his Transformer friends when they are in danger, or he could be used to deliver important messages across long distances in a very short time. His super - speed could also be used to outmaneuver the Decepticons, dodging their attacks and confusing them, all while the Autobots plan their counter - attacks.
In Transformers Prime fanfiction where Jack gets hurt, one possibility could be that he gets injured during a battle between the Autobots and Decepticons. Maybe he was trying to help the Autobots and got caught in the crossfire. For example, a stray blast from a Decepticon weapon could have hit him while he was guiding Bumblebee to a strategic location.
Well, without having read it, it could be that in this fanfiction, Jack in Transformers Prime is given a very important mission regarding the Allspark. It could be about how he discovers the true power of the Allspark, or perhaps he has to protect it from some great danger. There could also be some character development for Jack as he interacts with the Allspark and other characters in the context of this fan - made story.
A possible way is to make the tail a part of a prophecy. In the Transformers Prime universe, there could be an ancient prophecy that mentions a human with a tail who will bring great change. Jack, being the one with the tail, is then thrust into a series of adventures. He has to work with the Autobots to fulfill the prophecy while also dealing with the challenges of having a tail, like getting used to moving around with it and facing the ridicule of some of the more skeptical humans.
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.
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.
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.