I think Carly and Tori would be likely friends. They both are creative and kind of lead their own groups. They would probably bond over their shared love for performing and coming up with new ideas for shows.
I think Carly and Tori would be really interesting. Carly is used to running her own web - show and has a very DIY approach. Tori is more into traditional performing arts. When they come together, there could be a clash of ideas at first. For example, Carly might want to use a lot of home - made props and simple camera setups, while Tori is used to the grandeur of the Hollywood Arts stage. But they could also learn a lot from each other. Carly could teach Tori how to connect more directly with an online audience, and Tori could introduce Carly to more formal performance techniques.
Draculaura and Darling Charming might become friends. Draculaura is kind - hearted and Darling is brave. Draculaura could show Darling the ropes in Monster High, like how to handle the spooky atmosphere. Darling could in turn teach Draculaura some sword - fighting skills or share stories of her knightly adventures. Their different personalities would complement each other well.
Carly and Jade could be really cool together. Carly is sweet and friendly, while Jade is edgy and a bit of a troublemaker. Their interactions would be full of contrast. Carly might try to soften Jade a bit, and Jade could introduce Carly to a more rebellious side of life in Hollywood Arts.
Jack from 'Kickin' It' and Tori from 'Victorious' seem likely. Jack is adventurous and has a good sense of humor. Tori is also quite fun - loving and creative. They could bond over their shared love for trying new things and standing up for what they believe in.
I think pairing up Carly and Hermione would be really interesting. Carly is creative and resourceful in the Muggle world, while Hermione is brilliant in the wizarding world. They could learn a lot from each other, like Carly teaching Hermione about modern technology and Hermione teaching Carly about magic spells.
Grover and Sam would be a fun combination. Grover is kind of goofy and has his own unique charm, and Sam is tough and not easily intimidated. They could get into all sorts of comical situations together, like when they go on a hunt for a mythical creature that has escaped into the city where iCarly is set.
Jade West from 'Victorious' and Stef from 'The Fosters' might also be a great pair to interact. Jade is tough and outspoken, and Stef is a strong - willed woman. They could start off butting heads but then find common ground and respect for each other. Maybe they both have to deal with some kind of troublemaker in their respective communities and end up sharing strategies.
Well, perhaps there's a plot where the iCarly gang goes to Hollywood Arts (from Victorious) for a special project. Sam could get into some hilarious prank battles with Jade, while Freddie tries to film the whole chaos for a new iCarly episode. And Cat could teach Gibby some really wacky dance moves.
Spyro and Twilight Sparkle would be likely to interact. Twilight is very intelligent and well - versed in magic, and Spyro has his own dragon powers. They could learn from each other. For example, Twilight could study Spyro's dragon magic, and Spyro could learn about the complex magic system in Equestria from Twilight.
Sam is also a probable candidate. Given her feisty nature, it could lead to some interesting scenarios where she tries to fight back against the kidnapper. And her relationship with Carly and Freddie would drive them to take action.