Luna Lovegood
Harry first meets Luna this time at Bill and Fleur's wedding, in which she and her father, Xenophilius Lovegood wore "egg yolk" yellow robes. Later, Luna was captured on the Hogwarts Express by Death Eaters because her father wrote the truth about Harry in The Quibbler. Harry assists Luna out of Malfoy Manor, where she had been taken hostage, and she comforted Mr. Ollivander (who had also been taken prisoner because Voldemort needed information from him), by sharing her beliefs.