Well, in this fanfiction, perhaps Snape would be initially shocked. He might see his own traits in his grandchildren. He could share his knowledge of potions or magic with them in a more gentle way than he ever did with his students. Maybe he would tell them stories about the old days at Hogwarts, including his time with Harry Potter and the other characters.
He might have a very nurturing relationship. Since he had a tough life himself, he'd want to make sure his grandchildren are happy. He could be strict when it comes to their magical education but also very loving.
In fanfiction, when Aang meets his grandchildren, it could be a very heartwarming moment. He might pass on his wisdom about airbending and the importance of balance in the world. Maybe he'll tell them stories of his adventures with his friends, like how they defeated the Fire Lord and brought peace to the four nations.
In fanfiction, when Darth Vader meets his grandchildren, there could be a moment of shock and confusion. His dark past might contrast sharply with the innocence of his grandchildren. Maybe he would initially be feared by them, but as time passes, he could show a side of him that was long buried under the Vader persona, a side that is capable of love and protection.
Perhaps Snape would initially mistake the Dursleys for some sort of Muggles with a bit of dark magic in them due to their cruel nature. He could start investigating them, which would cause chaos in the Dursley household as they try to hide their secrets from a wizard like Snape.
In this kind of fanfiction, Snape might be initially very confused and on guard when meeting a Muggle. He could be out of his comfort zone in the wizarding world and struggle to interact with someone who has no knowledge of magic.
One possibility is that Naruto gets transported to the world of Harry Potter where he meets Snape. Naruto's energetic and positive attitude could clash with Snape's brooding nature. However, they might find common ground in their loyalty to their respective friends and causes. Naruto could show Snape the value of perseverance in a different light, and Snape could introduce Naruto to the complex world of potions and magic.
In such a fanfiction, Albus Potter might initially be intimidated by Snape's reputation. But he could gradually discover Snape's hidden qualities. Maybe Snape would become a mentor - like figure to Albus, guiding him in magic that he couldn't learn from others.
In this fanfiction, Snape might initially be quite distrustful of Cecilia as she is a Muggle. He could be on guard, perhaps even a bit rude at first. But as the story unfolds, he might discover that Cecilia has qualities he didn't expect, like kindness and an open - mindedness that start to break down his prejudices.
Well, it could be a really heartwarming scenario. The marauders might be shocked at first to see how much their grandchildren resemble them or their children. They could share stories of their adventures, passing on their wisdom and perhaps even some magical tricks.
In this fanfiction, perhaps Snape finally gets the chance to truly apologize to Lily. He might express all the unspoken feelings and regrets he had when she was alive.