Here are the different types of characters in Lego Harry Potter: Years 1-4, and what abilities each character has.
Types Of Characters*
*If only one type of the character is listed (ex. just “Harry Potter” instead of “Harry (Pyjamas)”), then all of that character’s variations have that ability. If a specific variation is used, only that variation has that certain ability. If a character’s name is listed with another’s name afterwards (ex. “Hermione Granger (Crookshanks)”), it means that character has access to the latter, and the latter can be used for that ability.
Animagi/Characters with Pets: Hermione Granger (Crookshanks), Ron Weasley (Scabbers), Rita Skeeter, Remus Lupin, Sirius Black, Peter Pettigrew, Professor McGonagall, Argus Filch (Mrs. Norris), Neville Longbottom (Trevor)
Book Characters: Hermione Granger, Professor McGonagall, Professor Dumbledore
Dark Wizards: Professor Quirrell (Voldemort), Tom Riddle, Lucius Malfoy, Peter Pettigrew, Death Eater, Voldemort, Barty Crouch Jr.
Digging Characters: Fang, Hermione (Cat), Sirius Black, Hermione Granger (Crookshanks), Professor Sprout, Neville Longbottom, Filch, Remus Lupin
Flying Characters: Harry Potter, Katie Bell, Fred Weasley, George Weasley, Oliver Wood, Angelina Johnson, Alicia Spinnet, Draco Malfoy, Marcus Flint, nearly all adult wizards
Ghosts: The Bloody Baron, The Fat Friar, The Grey Lady, Nearly Headless Nick, Moaning Myrtle, Lily Potter (Ghost), James Potter (Ghost), Professor Binns
Girl Characters: Harry (Girl Disguise), Ron (Girl Disguise), Hermione Granger, Katie Bell, Ginny Weasley, Parvati Patil, Angelina Johnson, Alicia Spinnet, Gryffindor Girl, Millicent Bulstrode, Slytherin Girl, Padma Patil, Cho Chang, Penelope Clearwater, Ravenclaw Girl, Susan Bones, Hannah Abbot, Hufflepuff Girl,
Gryffindor Students****: Harry Potter, Hermione Granger, Ron Weasley, Katie Bell, Seamus Finnigan, Percy Weasley, Fred Weasley, George Weasley, Neville Longbottom, Oliver Wood, Ginny Weasley, Colin Creevey, Parvati Patil, Dean Thomas, Angelina Johnson, Lee Jordan, Alicia Spinnet, Gryffindor Boy, Gryffindor Girl
Hufflepuff Students****: Justin Finch-Fletchley, Cedric Diggory, Susan Bones, Ernie Macmillan, Hannah Abbot, Hufflepuff Prefect, Hufflepuff Boy, Hufflepuff Girl
Invisibility Cloak Characters: Harry Potter
Muggles: Dudley Dursley, Petunia Dursley, Vernon Dursley, Mrs. Mason, Mr. Mason, Milkman, Filch, Dobby
Parselmouths: Harry Potter, Voldemort, Tom Riddle
Ravenclaw Students****: Padma Patil, Padma (Ballgown), Cho Chang, Penelope Clearwater, Ravenclaw Prefect, Ravenclaw Boy, Ravenclaw Girl
Regular Wizards: Harry Potter, Hermione Granger, Ron Weasley, Professor Dumbledore, Professor McGonagall, Hagrid*, Professor Flitwick, Professor Snape**, Alastor Mad-Eye Moody, Professor Quirrell, Professor Lupin, Madam Hooch, Gilderoy Lockhart, Madam Pomfrey, Madam Pince, Professor Sprout, Professor Trelawney, Professor Sinistra, Professor Vector, Katie Bell, Seamus Finnigan, Percy Weasley, Fred Weasley, George Weasley, Neville Longbottom, Oliver Wood, Ginny Weasley, Colin Creevey, Parvati Patil, Dean Thomas, Angelina Johnson, Lee Jordan, Alicia Spinnet, Gryffindor Boy, Gryffindor Girl, Draco Malfoy, Vincent Crabbe, Gregory Goyle, Marcus Flint, Millicent Bulstrode, Slytherin Prefect, Slytherin Boy, Slytherin Girl, Padma Patil, Cho Chang, Penelope Clearwater, Ravenclaw Prefect, Ravenclaw Boy, Ravenclaw Girl, Justin Finch-Fletchley, Cedric Diggory, Susan Bones, Ernie Macmillan, Hannah Abbot, Hufflepuff Prefect, Hufflepuff Boy, Hufflepuff Girl, Arthur Weasley, Molly Weasley, Sirius Black, Amos Diggory, Barty Crouch Sr., Doris Crockford, Mr. Ollivander, Tom The Inkeeper, Madam Malkin, Madam Rosmerta, Stan Shunpike, Rita Skeeter, Corneilus Fudge, Ernie Prang, Dragon Handler, Trolley Witch, Fleur Delacour, Viktor Krum, Durmstrang Student, Vocalist, Guitarist, Bassist, Drummer, Wizard (Green), Shifty Wizard, Station Guard, Gabrielle Delacour
Slytherin Students****: Harry (Slytherin Disguise), Ron (Slytherin Disguise), Draco Malfoy, Vincent Crabbe, Gregory Goyle, Marcus Flint, Millicent Bulstrode, Slytherin Prefect, Slytherin Boy, Slytherin Girl
Strong Characters: Hagrid, Viktor Krum, Tom Riddle, Fang
Time Turner Characters: Hermione Granger
*Hagrid is considered a Regular Wizard, although the only spell he can use is Wingardium Leviosa.
**Snape is a Regular Wizard and not a Dark Wizard, because although he can use Crucio to destroy red glowing objects, he cannot use Avada Kedavra.
***Professors who belonged to a specific house can also gain access to their common rooms/dorms***
****Both Filch and Professor Dumbledore have access to any of these dorms****
What Abilities Do They Have?
Animagi have the ability to turn into an animal at will. In your spells’ area, this ability should be green and should be in between Expelliarmus and Wingardium Leviosa. Some Animagi are also Digging Characters, while some can crawl through tunnels, and some can do both.
Book Characters have the ability to open bookcases throughout the game. There is really no way in the game to tell if a character has this ability without testing it out.
Dark Wizards have access to two spells that Regular Wizards cannot use: Crucio and Avada Kedavra. Crucio comes up where Wingardium Leviosa is in a Regular Wizard’s spells, and can be used to destroy items with red sparkles around them instead of the regular pinkish color. Dark Wizards can also use Wingardium Leviosa on objects, though. The other spell, Avada Kedavra, can be used to instantly kill a character that isn’t a Boss (ex. you can’t kill Professor Quirrell in Face Of The Enemy with Avada Kedavra, nor can you kill Aragog in Follow The Spiders with this spell, etc.).
Digging Characters can be used to dig holes where it is marked on the ground by some paw prints.
Flying Characters can fly well on a broomstick; other characters without this ability are out of control on a broomstick, but can still make it short distances.
Ghosts have no magic abilities, but can be used to scare students. Moaning Myrtle (Swimsuit) is an exception to this, since she can levitate objects but has no access to other spells.
Girl Characters have access to the girls’ bathroom in the level Out Of The Dungeon.
Goblins have the ability to open vaults. There is only one Goblin in this game: Griphook.
Gryffindor Students have access to the Gryffindor common room.
Hufflepuff Students have access to the Hufflepuff common room.
Invisibility Cloak Characters have access to the Invisibility Cloak, which can completely conceal you from anyone. There is only one Invisibility Cloak Character: Harry Potter.
Muggles have no magical abilities. Filch can hit people with his lantern; other Muggles just roll into other characters to attack. Dobby isn’t actually a Muggle, but he has all abilities of a Muggle in the game.
Parselmouths have the ability to speak Parseltongue to snakes.
Regular Wizards are any characters with magic abilities that are not Dark Wizards. Most characters in the game are Regular Wizards.
Slytherin Students have access to the Slytherin common room.
Strong Characters have the ability to pull chains without having to drink a Strength Potion.
Time Turner Characters can use the Time Turner when finding a grandfather clock in Hogwarts. Going back in time usually changes the atmosphere; for example, if there is a character token in the room when you use the Time Turner, it may be replaced by another object or just be missing altogether once you’re back in time.