Harry Potter Carecter's = A

Wikipedia.com:

"Mrs Abbott – The mother of Hannah Abbott, killed by Death Eaters
Hannah Abbott – Hufflepuff student in Harry Potter's year, landlady of the Leaky Cauldron and wife of Neville Longbottom,[1] member of Dumbledore's Army
Euan Abercrombie – Gryffindor student who enters Hogwarts in Harry's fifth year
Stewart Ackerley – Ravenclaw student who enters Hogwarts in Harry's fourth year
Falco Aesalon – Ancient Greek wizard, first known Animagus
Cornelius Agrippa – Wizard imprisoned by Muggles for his “evil” writings
Alderton – Alleged Muggle-born sent to Azkaban in Deathly Hallows despite claiming relation to Arkie Alderton
Archibald Alderton – Blew up the town of Little Dropping in Hampshire
Arkie Alderton – Famous broomstick designer.
PC Anderson - A Muggle police officer from the Harry Potter prequel.[2]
Bertram Aubrey – Hogwarts student bullied by James Potter and Sirius Black
Avery – One of the first Death Eaters, attended Hogwarts with Tom Marvolo Riddle
Avery – Death Eater, Slytherin student who befriended Severus Snape while at Hogwarts"