Their other friends in the Arrow - verse would also have mixed reactions. Some might worry about how having a baby would affect their crime - fighting abilities. But overall, most would come around and be there to support Oliver and Laurel, whether it's through providing emotional support, practical help like babysitting, or just being there to celebrate the new addition to their family.
Thea would be excited to be an aunt. She would likely start shopping for baby clothes right away and be there for Laurel during her pregnancy, offering girl - to - girl advice. And Roy might be a bit more reserved in his reaction, but still happy for his friends. He would probably offer to help with security around their place to keep them safe during this vulnerable time.
Some of their friends would be immediately supportive. They would offer to help with whatever Laurel and Oliver need, whether it's setting up a nursery or just being there for emotional support. Others might be more skeptical. For example, some of Oliver's old friends from his playboy days might not believe he's ready to be a father. But overall, the reactions of their friends would play a big role in how Oliver and Laurel navigate the pregnancy in the fanfiction.
Their friends could be overjoyed. Diggle might offer his support and protection, as he has always been a loyal friend. Thea could be excited about becoming an aunt and start planning all kinds of baby - related things. Curtis might use his tech skills to create some amazing baby gadgets for them.
Another storyline might involve Laurel getting pregnant and Oliver being overprotective. He tries to keep her out of danger, but Laurel is determined to continue her work as a hero. This could lead to some tension between them as they both have strong opinions on how to handle the situation while also dealing with the reactions of their friends and family.
Harry would probably be shocked at first but then very supportive. He'd offer his help and protection, knowing how important Hermione is to him and how much she's been through. Ron might be a bit more hesitant, having his own complicated feelings about Hermione, but in the end, he'd come around and be there for her. Ginny would be excited and would start giving Hermione all kinds of advice about motherhood. Neville might bring over some magical plants that are good for a pregnant woman's health. Luna would say some very unique and wise things about the new life that's coming and how it's connected to the magical universe.
Clark might be initially shocked but then very supportive. He would probably offer his help in any way he could, given his own experiences with dealing with extraordinary situations. Lois might be a bit more outspoken, giving Chloe advice on motherhood and also teasing Oliver about becoming a dad. Tess could see it as an opportunity to use their situation to her advantage in some way, but eventually come around to being supportive.
A third common theme is teamwork. Since they are both involved in fighting crime in the Arrow series, fanfics may depict how they work together as a team. This could involve strategizing against their enemies, training together, or relying on each other's skills to overcome difficult situations in the fictional Starling City.
One common theme is redemption. Given Laurel's complex character arc in the show, many fanfics explore her journey towards redemption, often with Oliver by her side. Another theme is love in the face of danger. Since they are in a world full of crime and villains, their love has to withstand a lot of threats.
Thea Queen would be an interesting character to include. As Oliver's sister, she could have a unique perspective on their marriage and might be involved in family - related subplots. Also, Malcolm Merlyn could be a great antagonist in the fanfiction. His complex relationship with Oliver and his own motives could add a lot of drama to the story of Oliver and Laurel's married life.
One possible plot could be Oliver and Laurel navigating the challenges of being superheroes while married. They might have to balance their vigilante duties with their relationship, like dealing with secrets and the danger it poses to their family. Another could be them starting a family and how they raise their children in a world full of villains and chaos.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Arrow fanfics involving Laurel and Oliver. Many talented writers post their works there, and you can search specifically for stories with Laurel and Oliver in the tags.