One interesting concept could be the combination of different alien species from various sci - fi universes with the Space 1999 setting. For example, mixing the Goa'uld from Stargate with the Moonbase Alpha crew. It could create really unique power dynamics and storylines.
In some space 1999 crossover fanfiction, the idea of time travel crossovers is fascinating. Maybe the characters from Space 1999 end up in a different time period of another well - known sci - fi series, like the future of the Star Trek universe. This allows for exploration of different technological levels and cultural clashes.
Another concept is the crossover of mythological elements. Suppose the crew of Moonbase Alpha encounters creatures from Greek mythology in a crossover fanfic. It could be a really cool way to blend the ancient and the futuristic, with the Space 1999 characters having to deal with gods and monsters in space.
One interesting concept could be the combination of the Flood from Halo and the Necromorphs from Dead Space. Imagine how the two different types of parasitic, body - transforming threats would interact. Another concept might be the technology exchange. For example, how would the UNSC weapons and armor function in the Dead Space universe, and vice versa with the Dead Space engineering and weaponry in the Halo universe.
One interesting concept could be the combination of different power sets. For example, a space marine's combat skills combined with the dreadnought's heavy firepower in unique battle scenarios. Another might be the exploration of the relationship between a space marine who is transferred into a dreadnought and how they adapt to their new form.
One interesting concept could be the merging of Dead Space's terrifying necromorphs with the characters or settings from another universe. For example, if there was a crossover with a science - fiction series like Star Trek, seeing how the Starfleet crew would handle the necromorph threat would be really cool. They have different technologies and ethics, so it would create a lot of conflict and new storylines.
Some fanfictions crossover Power Rangers in Space with the Transformers. Imagine the Rangers and the Autobots working together against a powerful enemy. The different powers and technologies of both franchises create a lot of interesting plot possibilities.
Well, hyperspace travel is often a cool concept in space fanfiction. It allows ships to move faster than light in a fictional way. And there are those fanfictions where a powerful alien race controls a large part of the galaxy and how the underdog humans or other species try to fight against their rule. Additionally, the discovery of ancient alien technology that can change the balance of power in the universe is also a common concept.
One interesting concept could be Shreck crossing over with other fairytale characters in a modern setting. For example, Shreck meeting characters from 'Cinderella' in a bustling city. It can create humorous and unexpected interactions, like Shreck's gruff nature clashing with Cinderella's elegance.
One interesting concept could be the combination of Ben 10 000's powers with other fictional universes. For example, if he were to cross over with the DC universe, seeing how his alien forms interact with super - heroes like Superman or Batman. Maybe his Four Arms form could have an epic battle with Doomsday.
Well, a lot of fgo crossover fanfiction involves different historical periods colliding. Say, a crossover with the Roman Empire era and the modern day in the fgo world. Servants from different eras teaming up or facing off against each other can create really engaging storylines. Also, crossovers with other JRPGs like 'Final Fantasy' often bring in unique magic systems and character designs that add a whole new dimension to the fgo fanfiction.
Another concept might be a crossover with a superhero universe. Picture the Metalocalypse band members having to deal with superheroes and villains. They could use their music in unexpected ways, like using a powerful guitar solo to stun villains or inspire superheroes in battle.
A third concept could be a crossover with a historical era. Picture Kidomaro in ancient Rome or medieval Europe. He would have to deal with the social norms, different forms of combat, and the overall culture of that time period. This would likely lead to some very unique and engaging storylines as he tries to find his place in a world so different from his own.