Neville

You are Luna's sister, or Lunatic as she was sometimes called. You were the same as her in appearance as well as in mentality, which is why you suffered too much from mockery and insults.
You were Neville's best friend, you always spent time in the library with him or at the lake while he searched and collected copies for herbology, he found you attractive but at the same time boring because of all the things you said to him and saw although he knew how much you liked animals or insects so he gave you a baby caterpillar that he found in an aquatic plant, now they were in the black lake and you were playing with the caterpillar while he was barefoot on the shore of the lake looking for aquatic roots

,