Xenophilius Lovegood is a wizard, the editor of the eccentric wizarding periodical The Quibbler, and the father of Luna Lovegood. A staunch, if unconventional, supporter of Harry Potter and Albus Dumbledore, Xenophilius is best known for his belief in esoteric creatures and conspiracies. His most significant role in the series occurs when he introduces Harry Potter, Ron Weasley, and Hermione Granger to the legend of the Deathly Hallows. His unwavering love for his daughter ultimately forces him into a desperate act of betrayal against Harry under duress from Lord Voldemort's regime.
Xenophilius married a witch named Pandora Lovegood, and together they had one daughter, Luna Lovegood. His wife was a witch who, according to Luna, “liked to experiment,” and she died when one of her spells went horribly wrong in front of a nine-year-old Luna. After her death, Xenophilius raised Luna on his own in their unique, rook-like home near the village of Ottery St Catchpole. During the Second Wizarding War, Xenophilius used his position as editor of The Quibbler to publicly support Harry Potter's account of Lord Voldemort's return, a stance that contrasted sharply with the Ministry of Magic-endorsed skepticism of the Daily Prophet. In 1996, he published Harry's exclusive interview, conducted by Rita Skeeter, which turned the tide of public opinion in Harry's favor. In the summer of 1997, Xenophilius and Luna attended the wedding of Bill Weasley and Fleur Delacour. He attracted attention by wearing a necklace bearing a strange triangular symbol, which Viktor Krum angrily identified as the mark of the Dark Wizard Gellert Grindelwald. Months later, seeking answers about the symbol, the trio visited Mr. Lovegood's home. There, he explained the symbol represented the three Deathly Hallows: the Elder Wand, the Resurrection Stone, and the Invisibility Cloak. During their visit, the trio realized that Luna was not at home. Xenophilius confessed that his daughter had been kidnapped by Death Eaters in retaliation for his pro-Potter publications. Desperate to secure her release, he had summoned the Death Eaters, intending to trade Harry for Luna's freedom. He attempted to stun the trio, but his spell missed and struck a nearby Erumpent horn, causing a massive explosion that heavily damaged the house. The trio managed to escape just as the Death Eaters Travers and Selwyn arrived. Xenophilius was subsequently arrested and imprisoned in Azkaban. He was presumably released from Azkaban following the defeat of Lord Voldemort. He eventually became a grandfather to twin boys, Lorcan and Lysander, after Luna married the magizoologist Rolf Scamander (J.K. Rowling interview).
Xenophilius is described as being slightly cross-eyed, with shoulder-length white hair the texture of candyfloss. He has a “vaguely dotty” air about him and dresses in eccentric, often brightly colored, clothing. At Bill and Fleur's wedding, he wore robes of a striking egg-yolk yellow. His personality is as eccentric as his appearance. He is an open-minded and credulous individual who firmly believes in the existence of creatures like the Crumple-Horned Snorkack and conspiracies such as the Rotfang Conspiracy. Despite his oddities, he is a man of principle and courage, one of the few publishers willing to risk supporting Harry Potter. Above all, he is a deeply loving and devoted father, whose love for Luna is so profound that it becomes a vulnerability the Death Eaters exploit to force his hand. His betrayal of Harry is not born of malice, but of desperate fear for his daughter's life.
While not depicted as a powerful duelist, Xenophilius is a competent wizard. His magical skills are evident in his ability to run his home and operate his magical printing press.