One possible plot could be that Harry and Tonks initially face a lot of challenges due to the secrecy surrounding their relationship. They might worry about how their friends will react. But when the baby arrives, it becomes a symbol of hope. Their friends, like Hermione and Ron, gradually come to accept the situation and help them raise the child. The baby could also inherit some unique magical abilities from both of them, leading to interesting adventures as it grows up.
Well, it could be a humorous story. Maybe Tonks has some mischievous reason for dressing Harry as a baby. It might be part of a prank within the wizarding world, like she wants to see the reactions of others, especially Harry's friends. For example, Hermione might be shocked at first and then find it quite funny.
It might also be part of a mission or a disguise for some reason. In the wizarding world, strange disguises are not unheard of. Tonks, being a Metamorphmagus, decides that dressing Harry as a baby would be the perfect way to sneak him into a place where no one would suspect his true identity.
Dumbledore would probably take it in stride. He has seen many strange things in his long life. He might see it as a chance for Harry to experience a different perspective, and with his twinkling eyes, he would watch the whole situation unfold with amusement and a bit of wisdom, knowing that it's all part of the magical world's unique charm.
Ron might laugh out loud at first. He has a good sense of humor and would find the whole situation hilarious. But then he would also be a bit worried about Harry's dignity. Ginny, on the other hand, would probably blush and giggle. She has a bit of a crush on Harry and seeing him in such an adorable yet silly state would be both endearing and embarrassing for her.
Ginny Weasley could be another character. Given her relationship with Harry in the original series, in the fanfiction she might be part of the harem, bringing her own strong - willed and talented self into the mix, and her experience with the Weasley family's magic and values could influence the group.
Well, in some fanfictions, Harry might comfort Tonks by simply being there for her. He could listen to her problems, like if she's worried about her family or the situation in the wizarding world. Just his presence can be a source of comfort.
Most of Harry's friends from Hogwarts would be surprised, but they would quickly show their support. Neville, for instance, would be happy for them and might offer to help with any magical plants that could be useful for the baby, like those with calming or protective properties. The other Aurors that Tonks works with would probably be a bit more reserved in their reactions, but they would respect their colleague's decision. And the centaurs in the Forbidden Forest, if they were aware, might see it as a sign of new beginnings in the wizarding world, a new life that could bring balance or change to the magical realm.
One of the main characters would likely be Lupin. Since he has a connection with Tonks, his presence could add a lot of drama to the story. He might suspect their relationship or even accidentally discover it. Another could be Hermione. She's always observant and might pick up on the signs of their relationship, and could either support them or be concerned about the implications. Ron could also be in the mix, perhaps being a bit clueless at first but then getting involved in some way.
Yes, in some fanfictions, Tonks could potentially be written as Harry's pet. Fanfiction allows for a great deal of creative liberty, so authors can come up with all sorts of unique relationships between characters.