Hermione Granger (voiced by Emily Robison), Harry's best friend. Hermione sometimes helps Harry find his classes. She is first seen while Harry goes to Defence Against the Dark Arts class for the first time.
Ron Weasley (voiced by Gregg Chillin), Harry's other best friend. Ron also leads Harry to his classes sometimes. Playable with cheat. He is first introduced after talking to Professor Dumbledore.
Neville Longbottom (voiced by ?), Harry's fellow Gryffindor friend. Neville is first seen before Herbology Class say's that he's got a remembrall. The Remembrall said that Herbology Class is starting soon. He is seen again when Starting to Attend Herbology class while Fred and George arrives for the Beans. Neville Longbottom is seen again after Herbology where gets upset because Malfoy Stole His Remembrall. After chasing Malfoy, Neville is happy that he's got his Remembrall Back. Neville is last seen again in Defence Against the Dark Arts Class when Harry learns the Lumos spell by Quirrell.
Filch (voiced by Allan Corduner), the caretaker of Hogwarts. He chases Harry alongside with his cat Mrs Norris during The Sneak levels.
Mrs Norris, Filch's cat who helps her master to find Harry during The Sneak.
Peeves (voiced by Chris Crosby), a blue skinned, raven haired, bucktoothed, red-dressed poltergeist who is always causing trouble for either Harry or Filch. He is actually fought just once in the game.
Lee Jordan (voice only), the commentator for Quidditch and good friends with Fred and George Weasley.
Nearly Headless Nick (voiced by David Coker), the ghost of Gryffindor House who hels Harry by giving him advices and showing him the way on certain occasions.
The Grey Lady, daughter of Rowena Ravenclaw and ghost of Ravenclaw House. She is briefly seen passing through rooms.
The Bloody Baron, ghost of Slytherin House. When passing by, he can both open gates and cause damage to Harry.
Gnome: Annoying little creatures who bite Harry and steal a small amount of his Bertie Bott's Every Flavoured Beans. Once they steal them, they can not be recovred. They can be easily stunned with the Flipendo knockback jinx.
Orange Snail: Orange Snails can burn Harry if he touches them or their slime trails. Cast Flipendo to stun them.
Venomous Tentacula: A nasty plant that can bite Harry if he gets too close. They can be wilted by casting Incendio after Harry learns that spell. Abundant in Professor Sprout's gardens, they vary in size from small to big to giant and in number of heads from one up to over four. With few expections, they will faint only for few moments after being stunned by Incendio.
Doxy: Pixie-like dark blue flying beasts who bite when Harry gets too close. Cast Flipendo on them to repel them.
Fire Crab: There are only two Fire Crabs in the whole game, in the fire seed level. It can shoot fire out of its backside. Cast Flipendo on it twice to knock it over.
The Troll: There is just one troll in this game, which is the one that appears in Hogwarts Castle. Harry first need to run through the castle corridors in order to escape the troll. After Ron and him lock the door of the girls' bathroom, they realise Hermione is inside and go rescue her. Harry then needs to cast Flipendo on objects thrown by the troll to make counter-attacks while Ron tries to hit it with its own club by casting Wingardium Leviosa.
Dragon: The dragon Norbert is the only dragon in the game. You have to fetch fire seeds for it and take it to the top of the Astronomy Tower.
With the exception of a forest and a cave, the game takes place entirely on Hogwarts and its terrains. Although other places are mentioned and illustrated in drawings during the intro and outro of the game, they do not appear not even in cutscenes. Since the game is not open-world, each location can only be played in the levels they are not blocked. In this game, there are a few things to keep in mind: the first-floor is mistakenly referred to as "second-floor"; classroom 2E is located in the fifth-floor instead of the third; the Undergorund Chambers are located in the third-floor instead of the Dungeons.
Debug mode can be accessed by typing set engine.playerpawn harrydebugmodeon while in game. It shows the Unreal Engine in the top part of the screen, which has notably green characters. It may not work the first time, but if the player keeps trying or uses the wand it will certainly activate. The key F7 may be pressed to turn it off.
Once in the debug mode, the player can access the level list in the main menu and play any level any time (although the save books may not have effect when the debug is on).
By pressing a certain key on the top left region of the keyboard (which can vary depending on the keyboard type, although generally ' or ~), the player will open the game command engine. Then the player must type bcheatsenabled true and press enter. Once this is done, the following cheats can be inserted (not all of them will work all the time and they may not work at all sometimes):
ghost - opens ghost mode
fly - opens flying mode
walk - deactivates ghost and flying modes
givebeans - adds an amount of beans
givehousepoints - adds an amount of Gryffindor house points
giveseeds - adds an amount of seeds
giveallcards - adds all Wizard cards
harrysuperjump - makes Harry makes a very high jump when typed (may also work outside the engine)
harrykoresh - makes Harry invincible
killharry - makes Harry faint
killall - stun all other present creatures
setspeed - accelarate the game speed
quit - quits the game
Harry Potter Animation
Harry learning Flipendo with Professor Quirrell
Harry during the Flipendo Challenge
Fred and George escort Harry to the tutorial.
The Potion Riddle
Dumbledore rescues Harry
Quirrell/Lord Voldemort dies by blue shots and fire shots
Quirrell/Lord Voldemort defeated and Harry runs away from him before he passes out at the same time Quirrell dies
In the book and movie, Neville breaks his wrist after falling off a broomstick from a great height during the flying lesson, what allows Malfoy to steal his remembrall. In this version, Neville is not seen flying or wrist-broked at all, nor he appears at Harry's Flying lesson. Instead, he gets upset after that lesson, when he arrives and suggests Harry that Malfoy has stolen his remembrall.
In addition, Neville's angst was because he lost Trevor again, and upon his remembrall being retrieved, it is implied that Trevor had been left at the Herbology greenhouse causing Neville to panic. This was neither in the books nor the film.
In the book and this version of the game, Malfoy says he might leave Neville's Remembrall on a tree for him to find. In the film, he suggests to leave it on the roof.
In the film and book, Harry's broomstick is jinxed in the first Quidditch match. In this version, neither Quidditch matches have Jinxed brooms or accidents.
In the book, Quirrell summons ropes to tie Harry by snapping his fingers. In the film, Quirrell snaps his fingers to make fire surround the area. In this game, Quirrell also conjures fire, but does so by moving his hands.
Norbert seems to appear early in the game, unlike in the book and movie where he appears nearly at the end of the story.
Harry fights Draco with Christmas crackers. Though, in the books and movies, Harry doesn't fight Draco at all until Year 2, despite challenging Harry to a duel (that didn't happen) in the first book.
Harry gets trapped in the dungeons before Potions class, what doesn't happen in the book or the film.
Behind the scenes
The Dursleys have model files in the game, what suggests they were going to appear.
Originally Reparo, Verdimillious and Avifors were to appear in this version of the game. In addition, there are several spells that don't make an appearance anywhere else in the franchise, including Flintifors, Ectomatic, and an unnamed transfiguration spell. Also Incendio and Wingardium Leviosa were to have more uses.
In the opening level, when Dumbledore converses with Harry Potter, he briefly alludes to the Room of Requirement, citing he once found a room filled with chocolate frogs, and returned to the same room only to find fire crabs instead.
However, as the layout of the game's castle does not correlate perfectly with the book, this may be a coincidence.