They could interact through combat. For example, the Spartans might fight alongside the SG teams against a common foe like the Covenant or a powerful Goa'uld army. The Spartans' combat skills and advanced armor would be a great asset in the Stargate universe battles.
Another way of interaction is through cultural exchange. The Elites from Halo have a complex culture, and when they interact with the various cultures in the Stargate universe, there could be misunderstandings and also opportunities for growth. Similarly, the humans from the Halo universe could learn a great deal from the different planets and civilizations in the Stargate galaxy. For instance, they could learn new forms of diplomacy or trading techniques that are unique to the Stargate worlds. This would not only change the relationships between the characters but also influence the overall plot of the fanfiction.
The characters could interact through a portal that links their two worlds. For example, Master Chief could end up in Berk and be initially seen as a strange and powerful warrior by the Vikings. Hiccup, being the curious and open - minded character he is, would be the first to approach the Chief and try to communicate. They could then start to exchange ideas about their respective worlds and threats they face.
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.
In a fanfiction, Jaina Proudmoore could use her magic to study the energy shields of the Spartans. She might try to adapt that technology for use in Azeroth, perhaps creating new spells or enchantments. Meanwhile, the Spartans could learn from the mages about different forms of magic and how to use them in combat situations.
In a crossover, the Elites from Halo might interact with the Vulcans from Star Trek. The Elites' honor - based culture could be compared to the Vulcans' logic - based society. They could start off as adversaries, perhaps misunderstanding each other's motives, but then gradually come to respect one another as they learn more about their respective cultures and values.
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.
The technology of the Cylons from Battlestar Galactica might be a mystery to the Stargate teams at first. Their self - replicating and evolving nature could be both a threat and a potential tool. For example, the Asgard technology in the Stargate universe might be used to study and possibly control the Cylons. Meanwhile, the Ancient technology in Stargate could provide new ways to upgrade the Battlestar's systems.
If we consider the abilities of Servants in Fate and Spartans in Halo, it's really interesting. Servants have magical powers like Gilgamesh's Gate of Babylon which can summon countless weapons. Spartans, on the other hand, have their advanced combat training and high - tech armor. In a crossover, a Servant's magic might be able to disrupt a Spartan's high - tech equipment. For example, a lightning - based magic attack could short - circuit some of the Spartan's systems.