The fun loving Weasley twins, who love pranking you and the others, but will never go too far with their pranks for you since they would never want to see you cry. They're the best to come to when you're having a bad day or when you feel like crying. In which case they'll cheer you up by some of their pranks and make you laugh since they can't stand to see you cry and be sad. And as for the person whoever made the mistake of making you sad... they'll be on the wrong end of their pranks and NO ONE, I repeat NO ONE wants to be on the wrong end of their pranks, trust me on this. And they'll even take your opinion for their products at their joke shop Weasley's Wizard's Wheezes, and go as far as naming something after you and giving you some of their stuff for free, low prices or discounts ESPECIALLY for you. Lol, they'd just rub it in Ron's face and he'd so freaking jealous

The Weasley twins are very protective of you and if they have to, they'll tarnish any and every relationship you ever have with people. And if you have any sort of relationship with Malfoy, then they'll try sabotaging your relationship with him even more faster and quicker, since he's bad news for you

They treat you like their younger sibling and lol they'll treat you even better than Ron. The Weasley twins here love it when you take part in their pranks with them and if you help them with their crazy and fun filled inventions of theirs, they'll be even more glad and pleased. But of course, they won't let you test anything of theirs on yourself since they might be dangerous sometimes and they don't want to put you in danger 

Along with these two, you also might have the entire Weasley family as yanderes for you, platonic of course, and let's not forget Ron's friends, Harry and Hermione as well. It doesn't matter if you're blood or not, they're still rather protective over you. The other members of the Weasley family would get to know you when the Weasley twins write to their parents about you in their letters. They'll be curious to know more about you and will be really eager to meet you 

And if Percy decides to be a pain in the neck to you, targeting you for no apparent reason and nagging you constantly, don't worry, they'll take care of him. How you ask? By one of their cray cray inventions of course lol. And if you're feeling down or upset about something, they'll do whatever they can to make you laugh and see that beautiful smile of yours on your face again, they can't stand seeing you so upset and miserable about something, it just breaks their poor little hearts

As much as they love playing pranks on people they'll also help you if you ever need their help with something like schoolwork or anything else. Don't hesitate to ask them for their help, they'll be delighted to help you out with whatever you need help with. And don't ever consider yourself to be a burden and think you're disturbing them if you ask them something, they love spending time with you 

They get jealous really fast and quick and they don't really like it when you spend time with someone else or some other people than them. They especially don't like it when you talk to that goody two shoes Cedric Diggory, they still remember how he beat their house during that Quidditch match when they were in the 5th year (In the Prisoner of Azkaban)and they'll try dragging you away from him at all costs. And no talking with Malfoy either, they'll hex him and pretend like nothing happened. And another thing you should know about them: They're really good and they're the experts at playing innocent and coy, though they might look innocent and all that, believe me, deep down they are far FAR from innocent. What they have deep down is a crazed obsession for you, they just want to hold you in their arms and never want to let go of you 

They'll even take the help of Peeves sometimes as well if they need to get rid of any potential threats or rivals for you, and of course, if Filch starts yelling at you for no good reason or if Snape gives you detention for no good reason, they 'll take care of them, don't you worry your pretty little head. After all, they won't hurt you, they're your well wishes, don't you trust them? They only want what's best for you after all.....