Half-blood wizards are not Muggle-born, but their heritage includes one or more Muggle ancestors. Half-bloods are the most common kind of wizard (Rowling has stated that of the Hogwarts annual intake, 50% are half-bloods), especially as magical folk would have dwindled to extinction without marrying Muggles. Half-bloods include people that have one parent who is either a Muggle or a Muggle-born and have one who is a wizard/witch. Blood purity fanatics regard half-bloods as inferior wizards, though they think of half-bloods as superior to Muggle-born wizards. Albus Dumbledore and Lord Voldemort are two of the most important half-blood characters, and they are also two of the most powerful. Harry Potter is also a half-blood.
While Lord Voldemort is a half-blood, he desires blood purity in the wizarding world. The irony in this is notably similar to Adolf Hitler's hatred of Jews, as most sources indicate the Hitler was partially of Jewish descent
Notable half-bloods
- Harry Potter: Father, James Potter, pure-blood; mother, Lily Evans, Muggle-born.
- Tom Marvolo Riddle/Lord Voldemort: Father, Tom Riddle, Muggle; mother, Merope Gaunt, pure-blood.
- Albus Dumbledore: Father, Percival, pure-blood; mother, Kendra, Muggle-born.
- Severus Snape: Father, Tobias Snape, Muggle; mother, Eileen Prince, was a witch.
- Remus Lupin: Father, pure-blood. Mother, muggle-born (A half-blood per an interview with J. K. Rowling).[
- Nymphadora Tonks: Father, Ted Tonks, Muggle-born; mother, Andromeda Black, pure-blood.
- Teddy Lupin: Father, Remus Lupin, Half-Blood; mother, Nymphadora "Dora" Tonks, Half-Blood.
- Seamus Finnigan: Muggle father, pure-blood mother.
- Dean Thomas: Muggle mother, father a pure-blood wizard killed by the Death Eaters.
(Interesting to note than DD and Voldy are two of the most brilliant minds and both are half bloods!)