Often, the FBI agents from Criminal Minds are initially skeptical of the supernatural elements that the Supernatural characters deal with. For example, Hotch might be very hesitant to believe in the existence of ghosts or demons at first. But as the story progresses, they start to see the evidence and have to work together with the Winchester brothers.
Scott McCall would probably be very cautious around the Criminal Minds team at first. He's used to keeping the werewolf secret. But when he realizes they're there to help solve a problem, he might open up. Spencer Reid, on the other hand, would be extremely curious about the werewolves. He'd likely bombard Scott with questions. Derek Hale might be more standoffish, seeing the BAU as outsiders in his world. And Hotch would be trying to keep order and figure out how to work with these new, very different individuals.
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.
Well, the Criminal Minds team would approach the situation with their standard procedures. They would interview Teamiplier members as part of their investigation. Teamiplier, on the other hand, would probably be more eager to jump into action. They might crack jokes during tense moments, which could either relieve the stress for the BAU team or annoy them at first. But over time, they'd learn to work together, like when they face a common enemy or mystery.
The serious and cerebral profilers from Criminal Minds might initially clash with the more action - oriented SWAT team members. For example, Reid from Criminal Minds might seem overly intellectual and reserved to some of the SWAT guys who are used to more straightforward communication. But over time, they could learn from each other. The SWAT team could teach the Criminal Minds agents about physical combat and quick - response tactics, while the agents could help the SWAT team understand the psychology behind criminals they face.
One great plot twist could be when a character from Criminal Minds, like Reid, discovers he has some latent supernatural ability in the crossover world of Supernatural. Maybe he can suddenly see ghosts, which turns the whole investigation in a strange new direction.
Writers should focus on the character interactions. The BAU agents are highly intelligent and scientific - minded, while the Winchesters are more rough - around - the - edges hunters. This contrast can create great tension and also moments of growth and understanding. For instance, Dean might initially clash with Reid over their different beliefs, but as they work together on a case, they start to respect each other's skills. Also, creating a unique and menacing villain that requires both the profiling skills of the BAU and the supernatural knowledge of the Winchesters is key to a compelling story.
One great example could be a story where the Winchester brothers from 'Supernatural' team up with the BAU team from 'Criminal Minds' to hunt a supernatural - themed serial killer. Maybe the killer is using some dark magic to commit murders and leave no trace in a normal way, so both groups' expertise are needed.
Gibbs from NCIS would probably be very skeptical of the Supernatural elements at first. He's a man of facts and evidence. But as he sees things that can't be explained, he might start to open up. Dean Winchester, on the other hand, would likely be impatient with the slow - moving NCIS investigation process. They would need to find a middle ground to interact well.
Dean would probably be very suspicious of Hannibal from the start. He's seen a lot of bad guys, and Hannibal's calm and collected demeanor would set off his alarm bells. Sam, on the other hand, might be more interested in understanding Hannibal's motives. Hannibal would likely see the Winchesters as fascinating specimens. He might try to analyze their relationship and use it to his advantage.
The Flash's super - speed can be really useful in the Supernatural universe. He could quickly move between locations while hunting monsters or escaping dangerous situations. For example, if Sam and Dean are surrounded by demons, the Flash could use his speed to rescue them. On the other hand, the Winchesters' knowledge of the supernatural can help the Flash deal with threats that have a magical or otherworldly origin in his own city.