Luna Lovegood
Luna "Loony" Lovegood is a fictional character from Harry Potter and the Order of the Phoenix. She is described as looking like an embodiment of dottiness, with her wand tucked behind her ear for safe keeping and a necklace made of butterbeer caps. Luna's father is the editor of The Quibbler, where he prints "important stories he thinks the public needs to know." Ironically, the stories are often untrue and silly, however Luna believes them and she thus has many weird beliefs. Luna defends her beliefs, father and his magazine aganist insults from other characters, most notably Hermione Granger.
Luna is in Ravenclaw and Ginny Weasley's year, her fourth in Harry Potter and the Order of the Phoenix. She is called "Loony Lovegood" behind her back, although she is aware of this and doesn't mind. Some of her classmates regularly steal her possessions and hide them for the fun of it. When she told Harry this in an offhanded conversation, she unintentionally won his sympathy. Harry offered to help her find her lost things, but she refused.
Luna was never mentioned before Harry Potter and the Order of the Phoenix, though in Harry Potter and the Goblet of Fire it was mentioned that the Lovegood family lived in the area of The Burrow. It is never stated that this is Luna's family.
Luna has waist-length dirty blond hair and is described as having a dazed look. Luna joined Dumbledore's Army and was involved in the battle in the Department of Mysteries (Along with Harry Potter, Ron Weasley, Hermione Granger, and Neville Longbottom.)
Luna says her late mother was a "quite extraordinary witch" who liked "to experiment." She died when one of her spells went "rather badly wrong." Luna says it was "rather horrible" and admits she still feels sad about it sometimes, but is relieved she still has her father. As Luna witnessed her mother's death at the age of nine, she has been able to see Thestrals since she arrived at Hogwarts. In the Department of Mysteries, Luna claimed to able to hear voices behind a mysterious veil (often refered to in the world of fanfiction as the Veil of Death or the Black Veil) in the Death Chamber, which Harry could also hear. Luna says that dead people who have moved on, like her mother, are actually just "lurking out of sight". When she explained this to Harry, he didn't know what to make of it- another unusual belief of Luna's, or perhaps a comforting metaphor.