There could be other characters from the DC universe that step in to save Starfire. Maybe Superman, who is known for his sense of justice, hears about Starfire's plight and decides to help. He could easily overpower Red X and free Starfire. Another possibility is Wonder Woman. She would be a great ally in this situation. With her strength and combat skills, she could take on Red X and rescue Starfire.
One possibility could be that Red X is under some sort of mind control and is made to target Starfire. He binds her tightly as part of a plan to hold her hostage in order to get something from the Teen Titans. Maybe he wants some powerful artifact that the Titans are protecting and he thinks Starfire is the key to getting it.
Well, in some versions, Robin might use his combat skills and strategic thinking. He could have studied Red X's patterns beforehand and used that knowledge to outwit him. Maybe he sets a trap or uses some of his special gadgets to distract Red X long enough to free Starfire.
Other minor characters from the Teen Titans universe might also make an appearance. Maybe some of the villains that are associated with Red X could be there in the background, influencing his actions towards Starfire. Or some of the civilians that the Teen Titans protect, who could be caught in the crossfire of this struggle between Starfire and Red X, and their presence could add more complexity to the story.
A lot of fanfics might focus on a mission or adventure that they go on together. This gives the opportunity for them to bond and develop feelings for each other in the face of danger.
The main characters are obviously Starfire and Red X. Starfire is a well - known character from the Teen Titans series, with her superhuman strength, flight ability, and starbolts. Red X is a more mysterious character, often causing trouble and having a complex personality.
However, it could be that there's someone else pulling the strings. Maybe a new villain has hired Red X to capture Starfire. This new villain could be the real antagonist, with Red X just being a tool. In some fanfictions, it's common to have a hidden mastermind behind the obvious bad guy. So, it might not be as straightforward as just Red X being the bad guy all on his own.
Obviously, Red X would be the main antagonist as he is the one doing the kidnapping. But there could also be other antagonists in the background. For example, if Red X was working for someone else, that person could also be an antagonist. Maybe a powerful intergalactic criminal who wants Starfire's powers for his evil plans.
One characteristic is the exploration of their opposing personalities. Red X is more of a anti - hero, while Starfire is a heroic and positive character. Fanfictions may focus on how they clash or find common ground. For example, they could be forced to work together on a mission, and during that time, they start to see each other in a new light. Maybe Red X shows a softer side that Starfire didn't expect, or Starfire's optimism starts to rub off on Red X. Also, the fanfictions might delve into the power dynamics between them, considering their different abilities and how they complement or conflict with each other during battles or other situations.
You can try searching on fanfiction platforms like FanFiction.net or Archive of Our Own. Just use the keywords'red x kidnaps starfire' in their search bars. There might be some great stories out there that match this plot idea.
One common theme is trust. Since Red X is a rather mysterious character, Starfire often has to learn to trust him or not. For example, in many fanfics, they start off as distrustful of each other but gradually build trust as they face challenges together.