Drakken would be an obvious choice. He's always causing trouble in the original series, and if Ron has superpowers, he'd be very interested in stealing them for his own evil plans. Another could be Shego. She has her own powers and might see Ron's new powers as a threat or something she wants to take for herself.
Well, one possible plot could be that Ron discovers his superpowers accidentally. Maybe he gets exposed to some strange radiation or a magical artifact. Then he has to learn to control these powers while still dealing with his normal life, like school and his friends. Kim might be initially skeptical but then becomes his ally in using the powers for good.
Yes, there are some out there. Some fanfictions explore really interesting crossovers where Naruto's ninja skills are combined with Ron Stoppable's unique traits from Kim Possible. For example, one might have them team up on a mission that requires both Naruto's chakra - based abilities and Ron's resourcefulness. It's a really cool concept and can lead to some exciting storylines.
A popular Ron Stoppable x Tara fanfiction is 'Tara's Influence on Ron'. This story focuses on how Tara's presence in Ron's life starts to change him in small but significant ways. It shows how he becomes more confident and takes on new challenges because of her. It's a heart - warming read with a touch of humor here and there.
Well, it could be a wild ride. Picture Naruto in Ron's shoes, dealing with high school drama in the Kim Possible universe while also having his ninja powers. He might use his Rasengan to impress the other students or his speed to get to class on time. And Ron's friends would be super confused by this new 'Ron' with such different abilities.
One popular Ron Stoppable fanfiction could be those that explore his growth as a hero outside of Kim's shadow. For example, stories where he takes on solo missions and discovers new abilities.
One possibility could be that Ron, with his goofy yet endearing personality from Kim Possible, somehow gets transported into the Batman universe. Maybe he becomes an unlikely sidekick, using his clumsy charm to disarm villains in unexpected ways.
Comedy is also a big theme. Given Ron's goofy and relatable nature from the Kim Possible series, harem fanfictions often use his clumsy or unexpected reactions to humorous effect when interacting with the members of his harem. Like when he accidentally mixes up the names or gifts for different girls in his harem, creating hilarious misunderstandings.
One common theme is identity crisis. When Ron enters a different universe, he often has to figure out who he is in that new context. For example, in a crossover with a superhero universe, he might question his own abilities compared to the super - powered beings around him.