A common trope is 'The Chosen One'. In Halo, it could be a Spartan destined to save humanity from a particular threat. In Mass Effect, it might be a character with a special genetic code who is the only hope to defeat the Reapers. 'Alternate Universe' stories are also popular. Writers might create a universe where the events of Halo or Mass Effect happened differently. For instance, in an alternate Halo universe, the Covenant never formed, or in a Mass Effect one, the Protheans never died out and still play a major role in galactic politics.
The 'Team - up Against a Greater Threat' trope is quite prevalent. For example, in Halo, different UNSC factions and even some Covenant remnants might join forces to face a new, more powerful alien threat. In Mass Effect, various species from different planets could unite against a new Reaper - like enemy. The 'Redemption Arc' is also seen often. A character who has made bad choices in the past, like a mercenary in Mass Effect, might try to make amends. In Halo, a disillusioned Covenant soldier could turn against his own kind and seek redemption.
One popular trope is the 'fish out of water' scenario. For example, a character from Mass Effect Andromeda suddenly finding themselves in the Halo universe or vice versa. They have to adapt to the new rules, technology, and culture. Another common trope is the 'power - up' trope. A character might gain new abilities by combining the technology or powers from both universes, like using biotics with Spartan armor enhancements. And of course, the 'enemies to allies' trope is popular too, where the normally opposing forces in each game, like the Krogan and the Covenant, have to work together against a greater evil.
One popular 'Mass Effect Halo Fanfiction' might be those that combine the unique races from both universes. For example, a story could feature a Spartan working alongside a Turian. Another could be about the use of Halo's technology in the Mass Effect galaxy. And there are also stories that explore how the characters from each franchise would interact in a crossover situation.
Popular characters in Halo Mass Effect Fanfiction include some of the elites from Halo. Their honor - based culture can create interesting interactions with Mass Effect characters. Thane Krios from Mass Effect is also a character that often shows up. His assassin skills and complex backstory can add depth to fanfiction stories. And then there's the Flood - infected characters which, while not traditional 'popular' in the sense of heroes, can create really dark and interesting plotlines in fanfiction.
Another popular trope is'reverse engineering the Reapers'. In these fanfictions, the races in the Mass Effect universe try to understand and use Reaper technology against them. It often leads to some really cool technological advancements in the story and new ways to fight the Reapers that add an exciting element to the plot.
Some interesting concepts include character development. Imagine a Spartan from Halo teaming up with a Spectre from Mass Effect. How would their training and personalities clash or complement each other? Additionally, the idea of the Forerunners' technology being studied by Mass Effect's scientists is quite cool. It could potentially change the balance of power in the Mass Effect universe and open up new plotlines for fanfiction writers.
One great fanfiction could be 'The Galactic Convergence'. It combines the universes in a really cool way, with epic battles between the Spartans and the Mass Effect species. The character development in it is quite good too.
One popular trope is the 'rescue mission'. The male player character might have to rescue Miranda from a dangerous situation, which then deepens their relationship. Another is the 'forbidden love' trope, as Miranda often has her own duties and loyalties within the Mass Effect universe that could make a relationship with the male player complicated.
Master Chief from Halo is also a common character in these crossovers. His super - soldier abilities and stoic personality could make for some interesting interactions with the more diverse cast of Mass Effect. He might be intrigued by the biotics or the different political systems in the Mass Effect galaxy.
One aspect of Mass Effect Andromeda x Halo fanfiction could be the crossover of characters. Imagine Shepard from Mass Effect meeting Master Chief from Halo. Their leadership styles are different but both are highly respected in their respective universes. In fanfiction, they could team up to face a common threat that combines the enemies from both games, like a new type of alien that uses both the Reaper and Covenant technology. This would create a really exciting and unique story.
Master Chief from Halo is an obvious choice. His super - soldier skills and stoic nature would be really interesting to see in the Mass Effect universe. Another one could be Commander Shepard from Mass Effect. Putting Shepard in the middle of a Halo - style conflict would be exciting. And Cortana, the AI from Halo, could also play a major role. Her intelligence and relationship with Master Chief could be explored in new ways when combined with the Mass Effect elements.