Main Characters:
* Harry Potter: The main protagonist.
* Hermione Granger: Harry's brilliant and loyal friend.
* Ron Weasley: Harry's best friend and fellow Gryffindor.
* Albus Dumbledore: The wise and powerful Headmaster of Hogwarts.
* Severus Snape: The enigmatic Potions Master with a complex past.
* Rubeus Hagrid: The half-giant gamekeeper of Hogwarts.
* Draco Malfoy: Harry's arch-rival and a Slytherin student.
* Neville Longbottom: A timid but brave Gryffindor student.
* Luna Lovegood: An eccentric but kind Ravenclaw student.
* Ginny Weasley: Ron's sister and Harry's love interest.
* Fred and George Weasley: Ron's mischievous twin brothers.
* Lord Voldemort: The Dark Lord and Harry's nemesis.
Professors and Teachers:
* Minerva McGonagall: The Transfiguration teacher and Head of Gryffindor.
* Filius Flitwick: The Charms teacher and Head of Ravenclaw.
* Pomona Sprout: The Herbology teacher and Head of Hufflepuff.
* Sybill Trelawney: The Divination teacher.
* Gilderoy Lockhart: The self-proclaimed "greatest wizard of our age."
* Remus Lupin: The Defence Against the Dark Arts teacher.
* Alastor "Mad-Eye" Moody: The Auror who teaches Defence Against the Dark Arts.
* Charity Burbage: The Muggle Studies teacher.
* Horace Slughorn: The Potions Master and former Head of Slytherin.
Other Students:
* Cho Chang: Ravenclaw student and Harry's love interest.
* Colin Creevey: A Gryffindor student who admires Harry.
* Seamus Finnigan: A Gryffindor student known for his explosive spells.
* Lavender Brown: A Gryffindor student who briefly dates Ron.
* Gregory Goyle: A Slytherin student and Draco's friend.
* Vincent Crabbe: Another Slytherin student and Draco's friend.
* Pansy Parkinson: A Slytherin student known for her disdain for Gryffindors.
* Susan Bones: A Hufflepuff student.
* Ernie Macmillan: A Hufflepuff student.
* Hannah Abbott: A Hufflepuff student.
* Zacharias Smith: A Ravenclaw student who is skeptical of Harry's stories.
Magical Creatures:
* Dobby: A house-elf.
* Hedwig: Harry's snowy owl.
* Fluffy: The three-headed dog guarding the Philosopher's Stone.
* Buckbeak: A hippogriff.
* Fang: Hagrid's boarhound.
* Basilisk: A giant serpent.
* Thestrals: Winged creatures that only those who have witnessed death can see.
* Phoenix: Dumbledore's companion, Fawkes.
Order of the Phoenix:
* Nymphadora Tonks: A Metamorphagus who is a member of the Order.
* Sirius Black: Harry's godfather.
* Remus Lupin: Harry's former Defence Against the Dark Arts teacher.
* Kingsley Shacklebolt: A Ministry of Magic official.
* Molly Weasley: Ron's mother.
* Arthur Weasley: Ron's father.
* Mundungus Fletcher: A shady wizard who is a member of the Order.
* Alastor "Mad-Eye" Moody: An Auror and member of the Order.
Ministry of Magic:
* Cornelius Fudge: The Minister for Magic.
* Dolores Umbridge: The High Inquisitor of Hogwarts.
* Lucius Malfoy: Draco's father and a Death Eater.
* Barty Crouch Jr.: A Death Eater disguised as Mad-Eye Moody.
* Percy Weasley: Ron's older brother, who works for the Ministry.
Death Eaters:
* Bellatrix Lestrange: A powerful and cruel Death Eater.
* Lucius Malfoy: Draco's father.
* Peter Pettigrew: A traitorous friend of James Potter.
* Severus Snape: Initially a Death Eater, later joins the Order.
* Fenrir Greyback: A werewolf and Death Eater.
Other Characters:
* Albus Potter: Harry and Ginny's son.
* James Sirius Potter: Harry and Ginny's son.
* Lily Luna Potter: Harry and Ginny's daughter.
* Scorpius Malfoy: Draco's son.
* Rose Granger-Weasley: Hermione and Ron's daughter.
* Hugo Weasley: Hermione and Ron's son.
This list is not exhaustive, but it covers the most significant and iconic characters from the LEGO Harry Potter series. There are many other characters, including minor characters, creatures, and even some original characters created for the games.