Loid would also be an engaging character to center on. His spy skills and ability to adapt to any situation could be really cool in the Naruto world. He could use his disguise and infiltration skills to gather information about the ninja clans or even help Naruto on a mission. His calm and calculated nature would be a contrast to the more impulsive and emotional nature of some of the Naruto characters.
Kirby would be really interesting. His innocent appearance combined with his extremely powerful abilities makes for a great contrast. He could be the source of both humor and unexpected plot twists. For example, when he first meets Naruto, Naruto might try to offer him ramen, not knowing Kirby's preference for food is more about swallowing enemies. And Kirby's reactions to the different jutsu in the Naruto world could be really fun to write about.
Ainz Ooal Gown would be very interesting. His complex personality, with his mix of pride as an Overlord and his insecurities hidden beneath, would create a lot of depth. In the Naruto world, his reactions to the different values and cultures would be fascinating. For example, how would he deal with the concept of chakra compared to his own magic? And how would he interact with the ninjas who have such different combat styles and moral codes from his undead minions?
Naruto himself would be really interesting. His never - give - up attitude could inspire the students in the Assassination Classroom. He could also learn from their unique skills and knowledge. His journey in this new world would be full of surprises as he tries to adapt to their assassination - based curriculum.
Naruto would be very interesting. His boisterous personality and his strong sense of justice would make for great interactions in the Kingdom Hearts universe. He could be constantly amazed by the different worlds and the magic in the Kingdom Hearts setting, and his growth as a character could be explored further as he faces new challenges outside of his own world.
I think Naruto would be the most interesting. His ninja abilities and his whole backstory from the Naruto universe are so rich. When he enters the world of Liv and Maddie, his reactions to the modern and somewhat comical situations they face in their daily lives would be really fun to explore. He could also introduce a sense of adventure and danger that is different from what Liv and Maddie are used to.
Naruto would be the most interesting. His energetic and head - strong personality would make for great interactions with the Pokemon world. He could be constantly amazed by the different Pokemon and their abilities, yet still use his ninja skills and quick thinking to adapt. His ability to make friends easily would also mean he'd quickly bond with his Pokemon and other trainers.
Sasuke could be a fascinating character to focus on. His brooding and powerful nature would create an interesting contrast in the Maze Runner world. He could use his sharingan to gain an edge in the maze, seeing things that others can't. And his complex personality, with his thirst for power and his loyalty to Naruto (in some ways), would add depth to the story. He might initially be at odds with the Gladers but then come to respect them as he realizes their own forms of strength.
Loid is a great character to focus on. His double life as a spy and a father offers a lot of interesting story possibilities. You can explore his internal conflicts and how he manages to balance his dangerous job with his new family life.
For me, it would be the Nine - Tails from Naruto. Imagining how the giant, powerful fox would be perceived in the Destiny universe, where there are all kinds of strange and powerful creatures, would be really cool. And from Destiny, the Exo Stranger. Her mysterious nature and time - traveling abilities could add a lot of intrigue to the crossover. Another interesting character to focus on could be Sakura. Her growth as a medical ninja and her combat skills could be useful in the Destiny setting, and her relationship with Naruto and Sasuke could bring in some interesting character dynamics.
Toriel would also be an interesting choice. Her motherly nature could be put to the test in the rather unorthodox Family Guy world. She might try to take care of the Griffin family, especially the kids, in her own way. Her interactions with Lois could be really interesting, as they are both strong female characters but with very different personalities. And her fire magic could come in handy when dealing with some of the more dangerous situations in Quahog.