<Ul> <Li> Hannah Abbott--Hufflepuff student in Harry Potter's year, prefect of Hufflepuff house in fifth year, member of Dumbledore's Army </Li> </Ul> <Li> Hannah Abbott--Hufflepuff student in Harry Potter's year, prefect of Hufflepuff house in fifth year, member of Dumbledore's Army </Li> <Ul> <Li> Ludo Bagman--Head of the Department of Magical Games and Sports within the Ministry of Magic </Li> <Li> Bathilda Bagshot--author of A History of Magic, great aunt of Gellert Grindelwald . </Li> <Li> Katie Bell--Gryffindor student one year above Harry Potter; Chaser on the Gryffindor Quidditch team . </Li> <Li> Cuthbert Binns--ghost, History of Magic professor . </Li> <Li> Phineas Nigellus Black--great - great - grandfather of Sirius Black and former headmaster of Hogwarts, whose painting hangs in the office and helps out the current headmaster . </Li> <Li> Sirius Black--Harry Potter's godfather, a member of the Order of the Phoenix and prisoner on the run . </Li> <Li> Amelia Bones--Head of the Department of Magical Law Enforcement, aunt of Susan Bones . </Li> <Li> Susan Bones--Hufflepuff student in Harry's year, a member of Dumbledore's Army . </Li> <Li> Terry Boot--Ravenclaw student in Harry's year, a member of Dumbledore's Army . </Li> <Li> Lavender Brown--Gryffindor student in Harry's year, a member of Dumbledore's Army, briefly Ron Weasley's girlfriend . </Li> <Li> Millicent Bulstrode--Slytherin student in Harry's year, a member of Umbridge's Inquisitorial Squad . </Li> <Li> Charity Burbage--Professor of Muggle Studies at Hogwarts during Harry's time at school . </Li> <Li> Frank Bryce--Muggle gardener for the Riddle family . </Li> </Ul> <Li> Ludo Bagman--Head of the Department of Magical Games and Sports within the Ministry of Magic </Li>

Harry potter characters whose last name starts with b
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