Harry always thought that Mrs. Figg was just a batty, cat-loving neighbor on Privet Drive, but this year he learns that Mrs. Figg is actually a Squib (a non-magical person born to magical parents). She's the only person around connected to the Wizarding world when dementors attack Harry and Dudley, and her anger shows that she cares deeply for Harry's safety. She later testifies at Harry's hearing, and though Harry isn't sure how much good her testimony does—she only poorly describes what dementors look like—Harry gets off.
Mrs. Figg Character Timeline in Harry Potter and the Order of the Phoenix
The timeline below shows where the character Mrs. Figg appears in Harry Potter and the Order of the Phoenix. The colored dots and icons indicate which themes are associated with that appearance.
...chases down the two dementors. The dementors fly away, the night returns to normal, and Mrs. Figg , the Dursleys' crazy old neighbor, races toward the boys. She shrieks for Harry to... (full context)