Luna Lovegood
In Harry Potter and the Order of the Phoenix Harry first meets Luna (in her fourth year) on the Hogwarts Express train where is described as having straggly (messy), waist-length, dirty blonde hair and a distant dreamy, look. Harry thinks that she is odd because she was reading The Quibbler upside-down, and wearing a necklace made of butterbeer corks and radish earrings. When Harry first sees the Thestrals (black horse like creatures that can fly) pulling the carts, Luna tells him that she can see them too. Both Harry and Luna could see the Thestrals when most others could not because they had both seen death, and Thestrals can only be seen by someone who has witnessed death.