I've also heard of 'Twin Guardianship'. In this fanfic, the twin brother is more attuned to the secrets of Hogwarts. He discovers hidden passages and rooms that can be used as safe havens for Harry. He also forms alliances with some of the more mysterious creatures in the school grounds to keep an eye on Harry from all angles.
One great fanfiction could be 'The Brotherly Bond'. In it, Harry's older brother is always there to shield him from the Dursleys' abuse and the threats in the wizarding world. He teaches Harry spells early on and helps him build confidence.
Well, I remember reading a fanfiction where Harry's mate is not only protective but also very intelligent. They use their wits to outsmart Harry's enemies. This story focuses a lot on their strategic planning to keep Harry safe. It's really interesting to see how they interact and work together. The fanfic also explores the magical world from a different perspective through the eyes of this protective mate.
He could be very brave. Just like Harry, but perhaps in a more understated way. He might not be the 'chosen one' but still jumps into danger to protect his brother.
In some fanfictions, Edward's younger twin sisters are human. This creates an interesting dynamic as Edward has to protect them from the vampire world while also trying to live a normal life. For example, in one story, the sisters start to suspect that Edward is different. The story unfolds as Edward tries to keep his secret while still being a good brother to his sisters.
One great fanfiction with this theme is 'The Protector's Promise'. In it, Harry is constantly on guard to keep Hermione safe during their adventures beyond Hogwarts. It beautifully shows his protective nature through various dangerous situations they encounter.
One interesting fanfiction could be 'The Twin's Tale'. It explores how Ruby's twin sister might impact the story's dynamics. The sister could have a different combat style, like focusing more on long - range attacks while Ruby is close - combat oriented.
One common theme is loyalty. The twin brother is always loyal to Harry, standing by him no matter what. For example, in many of these fanfics, when Harry is wrongly accused, the twin brother is the first to defend him.
One possible plot twist could be that the twin brother has different magical abilities. For example, while Harry is known for his proficiency in Defense Against the Dark Arts, his twin could be a natural at Transfiguration. This would create an interesting dynamic as they could learn from each other in different ways. Another plot twist might be that the twin brother is initially hidden away for some mysterious reason, perhaps related to a prophecy that involves both of them. When he finally appears, it throws the wizarding world into chaos as everyone tries to figure out what his role is. And a third plot twist could be that the twin has a connection to Voldemort that Harry doesn't. Maybe he was unknowingly marked by Voldemort in a different way, leading to a race against time to figure out how to break that connection and save him.
There's a really good one called 'Cedric's Secret Love'. In this fanfic, Cedric's crush on Harry starts as a simple admiration that gradually grows into something deeper. It shows how their interactions, like during the Triwizard Tournament, could have been the starting point of Cedric's unspoken feelings. It also explores how Cedric might have dealt with jealousy when Harry was in the spotlight.
There might be a fanfic where Harry's stutter is a result of some dark magic he encountered. In this fanfic, he could be on a journey to find a cure. His stutter would add an extra layer of difficulty to his adventures as he tries to explain his situation to others and seek help. This would make for a very engaging and unique Harry Potter fanfiction.