One possible storyline could be that Oliver Queen is transported to the wizarding world during a fight in Star City. He stumbles upon baby Harry Potter and realizes the importance of protecting him. He then has to learn about the wizarding world quickly to keep Harry safe from the dark forces. Another storyline could be that the wizarding world somehow contacts Oliver for help in protecting Harry. Oliver brings his skills and knowledge from his own world to the task.
One way it could work is if there was some sort of magical accident that brought Oliver Queen to the wizarding world right when Harry Potter was a baby. Oliver, being a hero in his own right, would probably feel a sense of responsibility to protect the baby. He might not understand all the magic at first, but his combat skills and survival instincts would come in handy. He could teach the wizarding world some non - magical ways of self - defense, while also learning about magic himself to better protect Harry.
One possible plot could be that Harry, after facing so much darkness in the wizarding world, is suddenly whisked away into the world of Oliver Queen. Oliver, seeing Harry's plight and his potential, decides to adopt him. Harry then has to adjust to a new life with Oliver, learning archery and self - defense skills from him. He might also bring some of his magic into Oliver's world, helping him in his fight against crime in a very unique way.
One possible plot could be that Harry grows up learning archery and survival skills from Oliver. He might use his magic in a more covert way in Star City. Maybe he'd even join Oliver in his fight against crime, using a combination of magic and his newfound combat skills.
A possible storyline is that Fem Harry Potter, being a skilled witch, decides to help Oliver Queen improve his archery skills through magic. She could enchant his arrows to have special properties like always hitting their target or being able to penetrate any defense. In return, Oliver teaches her self - defense and combat skills without magic. This exchange of skills could lead to them growing closer and facing a common enemy together, like a powerful dark wizard who has made his way into Oliver's world. There could also be a story where Fem Harry Potter has to hide her identity as a witch in Star City, but her magic slips out at times, and Oliver has to cover for her while they both try to solve the mystery of why dark magic is starting to seep into his world.
Fem Harry Potter is likely to be brave, determined, and a bit idealistic due to her upbringing in the wizarding world and her experiences fighting Voldemort. Oliver Queen, on the other hand, is a more street - smart and cynical character having faced the harsh realities of Star City. Their personalities could clash as Harry might see Oliver's sometimes - brutal methods as too extreme, while Oliver could view Harry's reliance on magic as a crutch. However, they could also blend well. Harry's loyalty and sense of justice could inspire Oliver to be more open - minded, and Oliver's practicality could help Harry be more down - to - earth in her approach to problems.
Harry would likely become more physically capable. Oliver Queen would train him in combat and survival skills, so Harry would be less reliant on his magic for protection. His confidence would grow in a different way, not just from being 'the boy who lived' but from his own achievements in Oliver's world.
Well, it could be that Harry Potter, while on a magical mission, somehow gets transported to Star City where Oliver Queen operates. Oliver, being the vigilant Arrow, at first mistakes Harry for a threat. But then they realize they both fight for justice in their own ways. Harry could use his magic to assist Oliver in taking down some really tough villains that the Arrow alone couldn't handle, like some dark magic - infused criminals.
Thea could also be a great godmother. She's Oliver's sister and has grown a lot. She could be there to spoil the baby and also teach it some important lessons about family and loyalty.
Harry would likely be more assertive and confident in his physical abilities. Oliver Queen's training would make him rely less on magic for self - defense at first. He might also have a stronger sense of justice in a more 'human' way rather than just the wizarding world's view of good and evil. His personality would be a mix of the kind - heartedness he has in the books and the tough - as - nails attitude of Oliver Queen.