Ra's al Ghul might be another possibility. He has a long - term view of things and Felicity's intelligence could be useful for his grand plans. He might want to use her to build some sort of advanced weapon or decrypt important information.
In some fanfictions, it could be a new, original character. Maybe a brilliant but deranged scientist who has been observing Felicity's work from afar and believes that she can help him with his crazy experiments. This new character would bring a fresh perspective to the story.
A fanfic could also explore the reactions of the other characters like Diggle and Thea. Diggle might offer his fatherly advice since he has experience with fatherhood. Thea could be excited about becoming an aunt and start planning all kinds of things for the baby. This would add a touch of family - like warmth to the often - intense Arrow universe.
One interesting plot twist could be that Felicity's kidnapping was actually a ruse set up by her own side to infiltrate an enemy's lair. They made it seem like she was vulnerable to draw out the bad guys.
One possible fanfiction could be that Felicity discovers she's pregnant unexpectedly. Maybe she initially tries to keep it a secret from Oliver because she's worried about how it will affect their superhero lives. But eventually, she has to tell him and they have to figure out how to balance their duties and the new life coming.
The lost glasses could be a MacGuffin in this fanfiction. Felicity being kidnapped might be related to her connection to the glasses. Maybe she was the last person seen with them. It could lead to a story where she has to find the glasses while being held captive to bargain for her freedom.
In the fanfiction, Felicity with her hair in a bun might find a way to escape on her own. Since her hair is in a bun, she could use the hairpin or ribbon in it to pick a lock or create a distraction. Once she escapes, she has to evade the kidnappers' search parties while trying to find her way back to safety. Along the way, she might meet some unexpected allies who are drawn to her because of her unique appearance, including her bun.
Well, it could be that Felicity is pregnant and she has some sort of premonition about the baby having special powers. This leads her and Oliver on a quest to find out more about the baby's potential future. Maybe they meet some old characters from the Arrow universe who have knowledge about such things.
Well, in such a fanfiction, the story might explore how Felicity's pregnancy affects Team Arrow's dynamics. Her pregnancy could be a target for their enemies. Also, it could show her struggle to balance her role in the team with her new situation. She might start training other members more to take over some of her tasks during her pregnancy.
The plot could involve Felicity's pregnancy being a target. The villains in Star City could see it as a way to get to Oliver. So, Felicity has to be protected while also preparing for motherhood. Meanwhile, the team has to figure out how to keep her safe without her feeling like a burden.
Another idea for the plot could be that Felicity discovers something unusual about her pregnancy due to some sort of meta - human or magical influence in the Arrow - verse. This could send her and Oliver on a quest to find answers and protect their unborn child from unknown forces, all while still dealing with the regular villains and challenges in Star City.
Well, it could be that the loss of her glasses is just a random event in the chaos of the kidnapping. However, in fanfiction, it might also be used to create a moment of humor. Maybe when her glasses fall off, she makes some comical remarks about not being able to see the face of her kidnapper clearly. Or perhaps it's a way to show her clumsiness in a high - stress situation, which could be endearing to some readers.