* James Potter and Lily Potter: Harry's parents, tragically killed by Voldemort on Halloween night when Harry was a baby.
* Sirius Black: Harry's godfather, dies after a fall from the Department of Mysteries in *Order of the Phoenix*.
* Fred Weasley: One of the Weasley twins, killed in the Battle of Hogwarts in *Deathly Hallows*.
* Dumbledore: The Headmaster of Hogwarts, dies in *Half-Blood Prince* at the hands of Severus Snape.
* Severus Snape: A complex character with a tragic past, dies in *Deathly Hallows* after revealing his true loyalty and sacrificing himself.
* Remus Lupin: Harry's Defense Against the Dark Arts teacher, dies fighting Fenrir Greyback in the Battle of Hogwarts.
* Nymphadora Tonks: Remus Lupin's wife and a member of the Order of the Phoenix, dies in the Battle of Hogwarts.
* Hedwig: Harry's snowy owl, killed in *Deathly Hallows* while Harry, Ron, and Hermione are on the run.
These deaths are significant in the Harry Potter series, shaping the characters' journeys and highlighting the themes of sacrifice, love, and loss.