One idea could be a crossover with Ezio Auditore. They could team up to face a new, powerful Templar threat that spans across different time periods. Imagine the two assassins sharing their unique skills and knowledge.
A crossover with a character from a different game universe, like Geralt from The Witcher. Connor could find himself in Geralt's world, and they'd have to figure out how to deal with the strange creatures and magic there. Maybe Connor's stealth and Geralt's monster - hunting expertise could combine in interesting ways.
How about a crossover with Lara Croft? They could be on a quest to find a lost ancient artifact that has significance for both of their worlds. Lara's archaeological knowledge and Connor's combat skills would make for a great partnership in this fanfiction.
A third idea is that Connor time - travels to a post - apocalyptic world. Here, he has to use his survival skills and assassin training to help the remaining survivors. He could also try to find a way to restore the world to its former state, all while facing new and dangerous threats.
Altair Ibn - La'Ahad would be an excellent choice. Since they are both from the Assassin's Creed franchise, it would be interesting to see how their different time periods and experiences shape their interactions. Altair's more traditional Assassin ways could contrast with Connor's more nature - influenced style.
In a fanfic, they could be part of a grand adventure across the colonies. They get caught up in a mystery that involves ancient artifacts. Connor's knowledge of the land and his tracking skills, along with Aveline's ability to blend in and gather information in urban areas, would make for an exciting story as they race against time to uncover the secrets of the artifacts and keep them out of the wrong hands.
Begin by creating a conflict that involves both Edward and Connor. It could be a new Templar threat that has roots in Edward's time and resurfaces in Connor's. Develop their characters further by giving them internal struggles. Maybe Edward is haunted by his past actions as a pirate, and Connor is struggling with his identity as an Assassin in a changing world. As you write, keep the pacing right. Alternate between action - packed scenes and more reflective moments. And most importantly, let your love for the Assassin's Creed series shine through in your writing.
In a fanfiction crossover, they could end up in each other's universes by accident. Ben finds himself in a world full of EVOs and has to rely on Rex to get back home. Meanwhile, Rex is intrigued by the Omnitrix and tries to figure out how it works. They face many challenges together, like dealing with Rex's old enemies who see Ben as a new target.
One great Connor Kenway fanfiction is 'The Hidden Path'. It delves deep into Connor's character, exploring his internal struggles as he tries to protect his tribe and the colonies. Another one could be 'Connor's Redemption', which shows a different side of his journey, focusing on how he copes with the consequences of his actions. And 'Connor Among the Ancients' is also interesting as it places Connor in various historical and mythical situations.
A fanfiction could be about family ties. Maybe Connor discovers he has a distant relative who was part of Edward's crew. He sets out to find this person and in the process, uncovers more about his family's past. Along the way, he meets Edward's ghost or some kind of spiritual manifestation of him. Together, they work to protect a hidden Assassin stronghold from the encroaching Templars.
A new villain could be introduced in the fanfic who is specifically out to get Connor Kenway. This villain might have a personal grudge against Connor or be on a mission to eliminate all the Assassins, and Connor becomes their prime target and ultimately falls to their schemes.
A great place to find Connor Kenway fanfiction is Archive of Our Own (AO3). It has a large collection of fanfictions across various fandoms, including Assassin's Creed with many dedicated to Connor. Fanfiction.net is also a good option. It has been around for a long time and has a decent amount of Connor Kenway fanfics.
One idea could be a crossover with the X - Men. Spider - Man could team up with Wolverine. Their different fighting styles would make for some amazing action scenes. Wolverine's brute strength and healing factor combined with Spider - Man's agility and web - slinging abilities would be a great combination.