Dean Winchester would likely be charmed by Lorelai Gilmore's sass and sense of humor. He might also be a bit protective of her, given his nature. Sam would probably have in - depth conversations with Rory about books and knowledge. Rory, in turn, would be fascinated by Sam's experiences with the supernatural. And Luke would probably be a bit suspicious of the Winchesters at first, thinking they're up to no good in his town.
In a crossover, the characters' different worlds would collide in interesting ways. The Gilmore Girls' fast - paced, coffee - fueled conversations would contrast with the Winchesters' more serious and often dangerous situations. For instance, when Dean tries to explain the existence of demons to Lorelai, she might make a joke about it at first, but then slowly start to believe him as strange things start to happen in Stars Hollow. Meanwhile, Sam could bond with Rory over their love of learning, and they might exchange stories about their different kinds of adventures - Rory's academic ones and Sam's monster - hunting ones.
Sam and Oliver would probably start off a bit cautious with each other. Sam, being the more cerebral of the Winchesters, would be interested in Oliver's methods of protecting the city. Oliver, on the other hand, might be a bit skeptical of Sam's supernatural knowledge at first. Dean would likely bond with Diggle over their combat skills. They'd probably exchange stories about their battles, and Dean might even show Diggle some of his unique ways of taking down enemies. Castiel, with his angelic powers, would be a mystery to the 'Arrow' characters. Felicity might be both intrigued and a bit scared of him, but she'd also be eager to understand how his powers work.
If Castiel were to be in this crossover, he would be very confused by the walkers at first. He's used to dealing with demons and angels, not undead creatures. But he would quickly adapt and use his angelic powers to protect the group. Rick from The Walking Dead would see Castiel as a valuable asset but also be a bit wary of his otherworldly nature. They would have to learn to trust each other as they both have the goal of protecting the survivors and finding a way to end the chaos in their respective worlds.
Mabel would be excited to meet the Winchester brothers. She might try to get Dean to tell her all his hunting stories and would probably try to knit them some cool accessories. She could also introduce Sam and Dean to Waddles. Dipper would be a bit more cautious around them at first, but as they started working together, he would respect their skills and knowledge. The characters would need to learn to trust each other quickly since they come from different worlds but are facing similar threats.
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 powers of the Supernatural characters, like Sam's psychic abilities and Dean's combat skills, would contrast with the more otherworldly powers of the Good Omens characters. Aziraphale's ability to perform miracles and Crowley's demonic powers would be on a different scale. For example, Sam's psychic visions might be able to predict events that Aziraphale and Crowley are involved in, but they might not fully understand how he gets these visions at first.
The characters would likely be initially cautious. For example, Yu from Persona 4 might be a bit reserved when meeting Joker from Persona 5, but as they learn about each other's goals, they would start to trust. Yosuke might be excited to see the more high - tech Metaverse compared to the TV World, and he could bond with Ryuji over their shared love for adventure. Chie would probably challenge Ann to a fight at first, thinking she's just a pretty face, but then realize Ann's strength.
Another idea is that the Gilmore Girls' world is secretly being influenced by the Supernatural universe all along. The town's quirky characters could actually be hiding their true identities. Miss Patty could be a witch in disguise, using her dance studio as a cover. When the Winchesters arrive, they start to uncover these secrets. Dean might be initially skeptical but soon realizes that there's more to Stars Hollow than meets the eye. Sam would be more open - minded and start researching the town's past, finding connections to other supernatural events across the country.
Naruto would be really energetic and curious about Austin and Ally's world. He might constantly ask questions about how the music industry works. Austin and Ally would be initially shocked by Naruto's strange appearance and abilities but would quickly become friends. Ally could help Naruto with his reading and writing skills if needed, while Austin could introduce Naruto to cool modern gadgets. Naruto would, in turn, show them some cool ninja tricks like how to walk on walls.
If the characters were to interact, they would bring their own unique skills to the table. Peeta, with his charm and baking skills, could be an interesting contrast to the more straightforward Divergent characters. He might use his charm to gain allies among the Divergents. Meanwhile, Four from Divergent could teach some of the Hunger Games characters about combat techniques from the Dauntless faction. Their interactions would be a mix of cultural exchange and strategic planning for survival.