One of the well - liked Stargate crossover fanfictions is 'Stargate SG - 1 and Stargate Atlantis: The Crossover'. It combines the elements of both series really well, with interesting character interactions and exciting plotlines that involve both SG - 1 and Atlantis teams. Another great one is 'Stargate and Babylon 5: The Convergence'. It's a unique crossover that imagines how the two different universes could collide. The characters from both shows are written in - character, and the story has a good flow.
A good Stargate crossover fanfiction is 'Stargate Infinity and SG - 1: Bridging the Gap'. It ties in the less - known 'Stargate Infinity' with the more popular 'SG - 1'. It fills in some gaps between the two in terms of the Stargate universe's lore and has some really interesting character development for the characters from 'Stargate Infinity' as they interact with the SG - 1 crew.
A Stargate and Battlestar Galactica crossover can also be amazing. Picture the Stargate teams dealing with the Cylons. The fanfiction often explores how the military strategies from both franchises would clash or blend. It usually has a lot of action - packed scenes as well as some deep character - driven moments.
A great Stargate crossover fanfiction has to have well - written characters. For example, if it's a crossover with Star Trek, the Stargate characters should retain their original personalities while still being able to interact meaningfully with the Star Trek characters. Another factor is the plot. It should be engaging and make sense within the context of both universes. For instance, if it's a crossover between Stargate SG - 1 and Stargate Atlantis, the plot should involve a threat or mystery that requires the combined efforts of both teams. And the world - building has to be on point too. It should blend the different elements of the two Stargate shows (or other shows in a crossover) seamlessly, like how the technology and cultures interact.
I like 'Buffy in the SGC'. In this fanfic, Buffy is somehow transported to the Stargate Command. The author does a good job of showing how Buffy's slayer skills are both useful and a bit out of place in the military - science - fiction setting of Stargate. There are some really cool fight scenes against Goa'uld with Buffy leading the charge.
A third one is 'NCIS Meets Stargate SG - 1'. This one focuses more on the cultural clashes between the military - like NCIS - and the more science - focused Stargate teams. The NCIS agents are initially skeptical of the Stargate technology but as the story progresses, they learn to work together and rely on each other's skills to solve a mystery that spans across galaxies.
Some of the best Smallville and Stargate SG1 crossovers involve character interactions. For instance, Lex Luthor could get involved with the NID from Stargate SG1. This could create a whole new dynamic of power - hungry characters vying for control over alien technology. It makes for a really exciting read as the two universes collide in unexpected ways.
One idea could be that a Sentinel's enhanced senses are used to detect a hidden Goa'uld base that the Stargate team has been searching for. The Sentinel could sense the unique energy signatures or the presence of the symbiotes in a way the normal technology couldn't. Another idea is to have a Sentinel character be accidentally transported through the Stargate to a different planet. There, they have to use their Sentinel abilities to survive and team up with the Stargate team members who are also on a mission there.
A possible fanfiction could revolve around a joint mission. The races from Babylon 5 and the teams in the Stargate universe come together to face a common threat. Maybe an ancient evil that has the power to destroy both their worlds. They would have to combine their knowledge and resources, like the Psi Corps abilities from Babylon 5 and the Ancient technology in Stargate.
First, you need to be really familiar with both universes involved in the crossover. For Stargate, know the different gates, the Goa'uld, and the various teams. Then, come up with an interesting premise. Maybe it's a new enemy that can only be defeated by the combined forces of the two universes in your crossover. Keep the characters true to their original personalities.
One great 'Stargate Atlantis' and 'SG1' crossover fanfiction is 'The Lost City Reunion'. It brings together characters from both series in an exciting adventure. The story focuses on how the teams from SG1 and Atlantis collaborate to face a new and powerful enemy. It has great character interactions and stays true to the spirit of both shows.
Jack O'Neill from Stargate could be an interesting character to pair with Duncan MacLeod from Highlander. Jack's military experience and sense of humor would contrast well with Duncan's noble and sometimes brooding nature. Another good pair could be Daniel Jackson and Methos. Daniel's thirst for knowledge and Methos' ancient wisdom would make for great interactions.