One possibility in this fanfiction could be that Naruto's positive and determined nature clashes with Doctor Doom's tyrannical and power - hungry ways. Maybe Naruto is transported to Doctor Doom's world and tries to bring his sense of justice there. He might use his ninja skills to outwit Doom's high - tech defenses.
Well, Naruto could potentially adopt Doctor Doom's sense of determination. In fanfiction, Naruto might become more calculating like Doom. He could start using his enemies' weaknesses more effectively, similar to how Doom strategizes against his foes.
Well, Naruto might be really confused by Doctor Doom's technology at first. He's used to his own ninja world. But Naruto is quick to adapt. He'd probably try to talk to Doom about his goals and find out why he's so power - hungry.
Well, Naruto is obviously one of the main characters. He could be the doctor or someone related to the medical field in the fanfiction. Sakura might also be a major character as she has medical knowledge in the original Naruto series. And sometimes, characters like Kakashi could be patients or play a role in supporting Naruto's medical journey.
At first, Naruto might be a bit wary of the strange Doctor. But as the Doctor starts to show his kindness and knowledge, Naruto would grow to respect and trust him. The Doctor, on the other hand, would see Naruto's potential and determination, and would be like a father figure to him. They'd have a relationship based on mutual learning, with Naruto learning about the Doctor's world and the Doctor learning about the ninja way.
Well, obviously the mad doctor is a main character. He could be an original character created specifically for the fanfiction. Then there could be Naruto himself, who might be involved in trying to stop the mad doctor's evil plans or, in some cases, might be seeking the doctor's help for a friend's illness.
One interesting 'Naruto doctor fanfiction' could be about a doctor in the Naruto world who discovers a new chakra - related illness and has to find a cure. Maybe they team up with Naruto and his friends to save the village from this mysterious ailment.
She could have been inspired by someone like Tsunade. Tsunade is a great medical ninja, and Fem Naruto might have seen her skills and decided to follow in her footsteps. So she studies hard, learns about anatomy, and practices different medical jutsus.
There might be a fanfiction where Naruto is trained by a mysterious doctor from another land. This doctor has knowledge of a different type of medical ninjutsu that Naruto combines with his own skills. He then uses this new knowledge to help during a major epidemic that strikes the ninja world, becoming a hero not just as a fighter but also as a healer.