The Stargate Atlantis characters are used to dealing with advanced technology and alien species. They might initially be very curious about the RWBY characters' abilities that seem almost like magic in comparison. For example, Sheppard might be intrigued by Yang's ability to absorb and release energy with her punches.
Rodney McKay would probably be frustrated by the lack of what he considers 'proper' science in the RWBY world at first. But as he gets to know more about Dust and the Aura, he could start to see similarities to some of the energy concepts in the Stargate universe. He might work with Penny, who has an advanced mechanical body, to understand the unique technology and energy sources in both worlds.
In a fanfiction, Teyla could share her combat skills with the RWBY characters. Her hand - to - hand combat and knowledge of different fighting styles could be very useful for the RWBY teams. In return, the RWBY characters could show the Stargate Atlantis crew about the use of Dust. Weiss could demonstrate how Dust can be used to enhance combat abilities, which would be a new concept for the Atlantis crew.
The ninja skills of Naruto characters would be very useful in the Stargate Atlantis setting. Sasuke's Sharingan, for instance, could be used to quickly analyze new threats or understand the technology of the Ancients. Sakura's medical skills could be a great addition to the Atlantis medical facilities, especially when dealing with new types of injuries or diseases that they encounter on other planets. And Naruto's Rasengan could be a powerful weapon against the mechanical or alien threats in the Stargate Atlantis universe.
If we consider a crossover, the NCIS characters would be in awe of the technology the SG1 team uses. Ziva would be interested in learning some of Sam's self - defense moves. And McGee would be like a kid in a candy store around all the alien tech. On the other hand, the SG1 team would have to adjust to NCIS' strict protocol. For example, Jack might find it a bit stifling at first, but he'd also see the value in it. The interactions would be full of cultural clashes and mutual learning experiences.
Well, Spencer Reid from Criminal Minds would probably be fascinated by the technology from the Stargate universe. He'd be constantly asking questions and trying to understand the scientific principles behind it. Meanwhile, Colonel Jack O'Neill from Stargate might find Reid a bit of an oddball at first, but would grow to respect his intelligence.
The characters would interact in very interesting ways. For instance, Jack O'Neill from Stargate SG1 is a military man with a sarcastic sense of humor. He would probably find Gibbs from NCIS to be a kindred spirit in terms of military discipline, but their leadership styles might clash at times. Gibbs is more about leading by example and getting his hands dirty in investigations, while O'Neill has to deal with leading a team on dangerous off - world missions.
The Asari from Mass Effect would be intrigued by the Ancient technology in Stargate. Their natural curiosity and long lifespan would make them eager to study it. Meanwhile, the Goa'uld from Stargate might see the various species in Mass Effect as potential hosts or slaves, which would obviously lead to conflict. But the more moral characters from Stargate would oppose this and try to protect the Mass Effect races.
One idea could be to have the characters from RWBY travel through a stargate to the Pegasus Galaxy where Stargate Atlantis is located. They could encounter the Wraith and have to use their unique abilities from Remnant to fight them. For example, Ruby's speed and Crescent Rose could be very useful in combat against the Wraith.
The Stargate characters are used to dealing with advanced technology and alien cultures. When they meet the Harry Potter characters, they might be initially confused by magic. For example, Jack O'Neill might be both amused and intrigued by the spells the wizards cast. Meanwhile, Harry Potter and his friends would be curious about the Stargate technology and the different worlds it can access.
The military - minded characters from Stargate, like Jack O'Neill, would likely be initially cautious and somewhat skeptical of the more diplomatic Starfleet officers. However, they would soon realize the value of Starfleet's knowledge and resources. On the other side, Starfleet officers might be intrigued by the Stargate technology which seems so different from their own. For example, Captain Kirk might be eager to explore through the Stargate.
Ruby would be the most likely to engage with SCP fanfiction concepts in a positive way. She has an open mind and a sense of adventure. So she might see the SCPs as new challenges to face. Weiss would be completely against it. She values elegance and propriety in literature and SCP fanfiction doesn't fit that bill. Blake would look at the SCP concepts from a psychological angle. She'd wonder what makes people create such dark and complex entities. Yang would be all about the action. If there are strong SCPs in the fanfiction, she'd want to show them who's boss.
Weiss, with her more refined upbringing, could initially be a bit shocked by the differences in the Yamato's world but would soon start to find ways to use her skills. She might help with strategic planning, using her knowledge from Beacon Academy.