I think Kakashi would be a great choice. He's already a very versatile character. If he had Frozone's ice powers, he could combine it with his Lightning Blade technique. He could freeze enemies in place and then finish them off with his lightning - enhanced sword. His intelligence would also make him very creative in using these new powers.
Hinata could be the most interesting. Imagine her with Violet's invisibility and force field powers. Her shy nature could be played with as she uses her new - found powers to protect her friends and family. She could become a more confident character as she realizes the potential of these powers, and it would be interesting to see how she incorporates them into her Gentle Fist style.
I think Naruto and Violet would be an interesting pair. Naruto is all about being out in the open and using his powers boldly, while Violet is shy and more into hiding and using her powers subtly. They could learn a lot from each other. For example, Naruto could teach Violet to be more confident in using her powers in the open, and Violet could show Naruto how to be more strategic and less impulsive in battle.
Another interesting pairing could be Sakura and Elastigirl. Sakura is a strong - willed and intelligent character, and Elastigirl has her unique stretching abilities. They could team up to outwit enemies. Sakura could use her medical ninjutsu to heal any injuries that Elastigirl might sustain during their adventures, and Elastigirl could protect Sakura while she's performing her medical duties or preparing a powerful attack.
Definitely Spider - Man and Mr. Incredible. Mr. Incredible has brute strength and experience in dealing with super - villains. Spider - Man, on the other hand, has his acrobatic skills and spider - sense. Their combination would be interesting as they could learn from each other's combat styles. Mr. Incredible could teach Spider - Man how to use his strength more effectively in close - quarters combat, while Spider - Man could show Mr. Incredible how to be more agile and use the environment to his advantage with his web - slinging.
Mr. Incredible and Hulk. Just think about it. They both have incredible strength, but they also have different personalities. Mr. Incredible is more family - oriented and used to working in a team with his family. Hulk is more of a lone force, but when they team up, their combined strength could be unstoppable. They could have a great dynamic, like Mr. Incredible trying to calm Hulk down when he gets too angry or Hulk teaching Mr. Incredible some new ways to use his strength in a more brute - force manner.
I think Jack - Jack would be really interesting. His unpredictable and ever - changing powers could bring a lot of chaos and fun to the story. He could be the wildcard that the Avengers don't quite know how to handle at first. Maybe he accidentally turns into something that causes a big problem, like a giant monster, but then uses his powers in a creative way to help solve it later.
I think Rock Lee would be really interesting. His extreme dedication to training and his unique fighting style would be a great contrast to the often chaotic and self - serving characters in the GTA world. He could run around the GTA streets, challenging the thugs to combat and trying to uphold his ninja code in a very different and morally ambiguous environment.
Definitely Hiro and Violet. Hiro is a super smart tech - genius, and Violet is a shy girl with the power of invisibility. They could learn a lot from each other. Hiro could show Violet how to use some cool gadgets, and Violet could teach Hiro about using stealth in a more natural way than just with his tech.
Hiro and Dash would make an interesting pairing. Hiro is a brilliant inventor and Dash has super - speed. They could combine their skills in a chase scene. Hiro could create some gadgets to enhance Dash's speed or help him navigate obstacles better, while Dash could use his speed to quickly get Hiro to where he needs to be for his inventions or investigations.
I think Mr. Incredible and Hagrid would be a really interesting combination. Mr. Incredible's no - nonsense attitude and his physical strength combined with Hagrid's love for magical creatures and his knowledge of the wizarding world would make for some great interactions. They could both be involved in a mission to protect a rare magical creature from some villains who want to use it for evil purposes.
Definitely Naruto and Hulk. Just imagine Naruto trying to calm down the Hulk when he's angry. It would be hilarious. And on a more serious note, Naruto's positive energy might have an effect on the Hulk. Also, Sakura and Captain America. Sakura is a strong - willed and powerful female character, and Captain America is a symbol of leadership and justice. They could bond over their shared values and exchange fighting strategies.