Perhaps in a fanfiction, Dr Doom is actually a distant relative of one of the wizarding families in the Harry Potter universe. He discovers this connection and decides to use it to his advantage. He could try to manipulate the wizarding politics to gain more power, all while Harry Potter and his friends are suspicious of his motives and try to stop him.
Dr Doom would be a very interesting addition to the Harry Potter universe. His advanced technology would be a stark contrast to the magic of the wizarding world. He might see the magic as something to be conquered or studied. For example, he could try to reverse - engineer spells into technological equivalents.
Well, in such a fanfiction, Harry might grow up with a very different set of values. Dr Doom is known for his power - hungry and often ruthless nature. Harry could be trained in more aggressive magic and have a darker view of the wizarding world. He might be less trusting and more likely to take matters into his own hands in a more forceful way compared to the original Harry Potter.
If raised by Dr Doom, Harry Potter's personality would transform in multiple ways. He would lose much of his initial humility. Since Dr Doom is all about self - aggrandizement and power - hoarding, Harry would start to view himself as superior. His sense of humor would likely fade as Dr Doom is a rather serious character. Harry would also be more secretive. In the original story, Harry often shared his problems with his friends, but under Dr Doom's tutelage, he would keep things to himself more. He would be more independent, but in a rather lonely way, as his relationships would be more about power dynamics rather than true friendship.
The magic could blend in interesting ways. Harry's wand - based magic might be enhanced by Dr Strange's more esoteric and hand - gesture - based magic. For example, Harry could use his wand to direct the energy patterns he learns from Dr Strange.
Dr Doom, in the comics, is Victor von Doom. He's a scientific genius with a penchant for sorcery and a desire for world domination. His complex personality and advanced technology make him a formidable foe.
Well, it works by mixing the two distinct universes' elements. For instance, the magic from Harry Potter and the extreme combat scenarios from Doom. The fanfic writers might give Harry Potter the ability to use Doom - like weapons or give Doomguy some magical powers. It creates a really unique and exciting blend.
One interesting Doom Harry Potter fanfiction could be where the dark and gritty atmosphere of Doom seeps into Hogwarts. For example, a story where Harry has to face demons in the Forbidden Forest that are a result of some dark magic gone wrong, similar to the threats in Doom. Another could be about a crossover where Doomguy somehow ends up in the wizarding world and teaches the students some unorthodox ways of combat.