Well, in such a fanfiction, Draco might initially be very awkward. He's from a different family background and has had a somewhat antagonistic relationship with Harry. Meeting Harry's parents, he could be intimidated by their kindness. Maybe he starts to see Harry in a new light, realizing that his family values are not all that different from his own. He could also learn some important life lessons from them.
Well, it could be really chaotic. Draco's slytherin ways might clash with the Avengers' hero complex. He might try to manipulate the situation for his own gain, but the Avengers would likely see through his tricks.
In my opinion, the most interesting part would be the initial interaction. Draco, being a proud Slytherin, has to face the warm and friendly environment of Harry's family. His facial expressions, his hesitant words, and the way he tries to maintain his composure in front of them would be fascinating to read. And then, how Harry's parents react to this rather unexpected guest. Do they welcome him with open arms or are they a bit cautious? This back - and - forth of emotions and reactions would be the most engaging part.
The plot could be centered around Draco's need for help or refuge, and the Grangers end up being the ones he turns to. This would create a really interesting dynamic as they are Hermione's parents and Draco has had his fair share of issues with Hermione at Hogwarts. There could be a lot of character growth for Draco as he learns about Muggle life from the Grangers and they, in turn, learn about the wizarding world.
In the fanfiction, their meeting might be a moment of great significance. It could be a turning point in their relationship. For example, Scorpius might be facing some sort of problem at Hogwarts, and Draco, having been through similar situations, finally decides to open up to his son and offer his wisdom and support. This could lead to a stronger bond between them.
It's possible that in 'Draco meets the Weasleys' fanfiction, Draco would have to confront his own prejudices. The Weasleys, being a large and loving family, might show him what real family values are. Maybe he'd even develop a friendship with one of the Weasley siblings, which would be a huge shift from his usual Slytherin - Gryffindor rivalry.
Maybe they meet in a magical accident where some spell goes wrong and transports Dudley into the wizarding world where Draco finds him. Draco is tasked with helping Dudley get back home. During this time, Draco realizes that Dudley isn't as bad as he thought and Dudley sees that wizards aren't all that different from regular people. They could form an unlikely friendship through this adventure.
It could be that Draco meets Sirius in the Forbidden Forest. Draco might be there out of curiosity or on an errand for Snape, and Sirius could be hiding from the Ministry. Their meeting would be full of suspicion and unease as they size each other up.
Obviously, Draco Malfoy is one of the main characters. He's the Slytherin from Hogwarts who has a complex personality. Then there are the Grangers, specifically Hermione's parents. They play a crucial role as they are the ones Draco is meeting. Hermione might also be an important character even if she's not directly present all the time, as her relationship with Draco at Hogwarts and her being their daughter would influence how the Grangers interact with Draco.