There could be characters like Reed Richards. He is often in conflict with Doctor Doom. Richards represents the scientific and heroic side, which contrasts with Doom's more megalomaniac tendencies.
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.
Definitely not. Tony Stark and Doctor Doom are separate entities. Stark is known for his genius in technology and being Iron Man, while Doom is a powerful villain with his own complex motivations and abilities.
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.