Draco Malfoy
Background
Draco Malfoy is a wizard from house Slytherin and student at Hogwarts School of Witchcraft and Wizardry. His father is Lucius Malfoy and his mother is Narcissa Malfoy. Draco's aunt is Bellatrix Lestrange. He comes from a wealthy wizard family that are pure blood. Draco is friends with Crabbe and Goyle.
During the events of Harry Potter and the Sorcerer's Stone (2001) played by Tom Felton
The students arrive at the station and take boats to Hogwarts. Professor McGonagall tells the first year students that they must go through the process of being sorted into their respective houses and she explains the points system and the house that wins the most points will win the house cup. Draco makes a comment about Harry Potter, which causes the other students to exclaim and Draco introduces Harry to Crabbe and Goyle. When Ron Weasley snickers at Draco, Draco insults Ron and tells Harry some wizarding families are better than others. The first year students are brought into the Great Hall and brought to The Sorting Hat. Albus Dumbledore tells the first year students the rules including that the Dark Forest is off limits. The first to get sorted into their house is Hermione Granger, then Draco, Susan Bones, Ron, and Harry. Later, Madame Hooch teaches the students how to ride their broomsticks. Neville Longbottom loses control of his broomstick and eventually falls and breaks his wrist. While Madame Hooch is taking Neville to the hospital, Draco steal Neville's Remembrall. Harry flies after Draco and catches the Remembrall when Draco throws it into the air. As Harry, Ron and Hermione are walking back to the Gryffindor common room, they are stopped by Professor McGonagall who deducts points from both Gryffindor and Slytherin for Harry, Ron, Hermione and Draco, who tattled on them to Professor McGonagall, for being out past curfew and they are each given detention. For detention they are brought by Mr Filch to help Hagrid in the Dark Forest. Hagrid tells them Dumbledore made him send Norbert to Romania. They follow Hagrid and Fang into the forest and find unicorn blood and Hagrid tells them he found one dead a few weeks ago and their goal is to find the wounded unicorn. They split up and Harry and Draco go with Fang. They come across a robed figure hunched over the wounded unicorn and Fang and Draco run away, leaving Harry.
During the events of Harry Potter and the Chamber of Secrets (2002) played by Tom Felton
Draco and Lucius enter Borgin & Burkes and Lucius sells some of his things to Mr Borgin in case his house is raided by the Ministry of Magic. At Flourish and Blotts, Draco and Lucius walk up to Harry and Lucius grabs Harry and uses the end of his cane to part Harry's hair to reveal his scar. Lucius tells Harry his scar is legendary as is the wizard who gave it to him and Harry calls Voldemort a murderer. When Lucius comments on Harry using Voldemort's name, Hermione mentions fear of a name only increases fear of the thing itself. Lucius insults Hermione and her parents and Ron and his siblings and grabs Ginny Weasley's second hand book and calls Mr Weasley a disgrace to wizards and puts Ginny's book back, plus another into her cauldron pail. As the Gryffindor Quidditch team walk into the practice green, Marcus Flint tells them they were given the practice time to train their new Seeker, Draco. Ron walks up with Hermione and asks how the Slytherin team got the Nimbus 2001's and Marcus tells him Lucius bought them for the team. Draco comments to Ron that his father can afford the best and Hermione accuses Draco of buying himself onto the team, to which Draco calls her a Mudblood. Ron tries to cast an Eat Slugs spell on Draco with his broken wand, which backfires, causing Ron to vomit up snails and the Slytherin team including Adrian Pucey, Slyth Beater No 1, Slyth Beater No 2, Slyth Beater No 3 and Slyth Keeper laugh. During a Quidditch Match, the Gryffindor team is overwhelmed by the Slytherin team with their faster broom sticks and Lee Jordan announces another point for Slytherin. During the game, Oliver Wood has his broom broken by a rogue Bludger. The Bludger chases after Harry who sees the Snitch and chases after it with Draco behind him. Draco crashes and so does Harry, but he manages to grab the Snitch anyways. Gilderoy Lockhart and Professor Snape introduce a Dueling Club so the students can practice defending themselves. Harry and Draco are pitted against each other and during the match, Draco creates a magic snake. The snake starts to slither towards Justin Finch-Fletchley and it appears that Harry is commanding the snake with Parseltongue. Professor Snape destroys the snake with a spell and Justin Finch-Fletchley angrily thinks Harry was sending the snake after him. Later Draco sees who he thinks is Crabbe and Goyle being questioned in the hall by Percy Weasley and walks back with them to the Slytherin common room. They ask Draco about who might be the heir of Slytherin, but Draco doesn't know. He does tell them Lucius said the Chamber of Secrets had been opened 50 years ago and a student expelled.
During the events of Harry Potter and the Prisoner of Azkaban (2004) played by Tom Felton
Before the new school year feast, Draco asks Harry if he fainted when the Dementors came and Slytherin Boy makes fun of Harry. Hagrid takes the class to the woods and while they are walking Draco, who is standing next to Goyle and Crabbe, says that he is going to complain to Lucius that they allowed Hagrid to teach. Draco then makes fun of Harry and his encounter with the Dementors and the other Slytherin play along including Pansy Parkinson and Slytherin Boy. Hagrid introduces the students to Buckbeak as they stare in wonder, including Girl 1 and Boy 2. Harry is chosen to be the first student to interact with Buckbeak and Harry manages to make friends with Buckbeak and Buckbeak lets Harry ride on him. Buckbeak lands back on the ground and Draco arrogantly pushes the other students out of the way and walks up to Buckbeak, who attacks him and Hagrid is forced to take Draco to the hospital. During study hall, Pansy asks Draco if his arm hurts and he tells her Madam Pomfrey told him he could have lost his arm. Outside Hogsmeade Village, Draco, Crabbe and Slytherin Boy confront Ron and Hermione, who are looking at the Shrieking Shack and after Draco calls Hermione a mudblood, he is hit with a snowball. Crabbe, Slytherin Boy and Draco are pushed around and they run away. On the day of the execution, Ron, Hermione and Harry see Draco, Crabbe and Slytherin Boy standing on a hill overlooking the execution site and Hermione threatens Draco with her wand before punching him in the face.
During the events of Harry Potter and the Goblet of Fire (2005) played by Tom Felton
As Arthur takes the Weasleys, Harry and Hermione to their seats in the stadium for the Quidditch World Cup, Lucius and Draco make fun of how far away the Weasley seats are from the field. At Hogwarts, Dumbledore tells the students that Hogwarts will be hosting the Triwizard Tournament. Dumbledore introduces Madame Olympe Maxime and the students of the Beauxbatons Academy of Magic, including Fleur Delacour. He then introduces Igor Karkaroff and the students of Durmstrang, which includes Viktor Krum. The Goblet of Fire is brought into the hall and Dumbledore tells the students that whoever wins the tournament will have eternal glory. Alastor "Mad-Eye" Moody walks into the hall and is greeted by Dumbledore. Barty Crouch tells the students that no student under the age of 17 will be able to apply to participate for the Triwizard Tournament. In class, Moody introduces himself as the new Defense Against the Dark Arts teacher. He teaches the students about the Unforgivable Curses by using them on a tailless whip scorpion, which he taunts Draco with. Draco, who is with Crabbe and Goyle, taunts Harry's chances of surviving the Triwizard Tournament. Draco is about to cast a spell on Harry when Harry's back is turned when Moody sees him and transforms Draco into a ferret. McGonagall turns Draco back from a ferret and then chastises Moody.
During the events of Harry Potter and the Order of the Phoenix (2007) played by Tom Felton
Harry takes the train to Hogwarts and when he arrives, Draco, along with Crabbe and Goyle, starts harassing Harry. During the Hogwarts banquet, Dumbledore welcomes back Professor Grubbly-Plank as the Care of Magical Creatures while Hagrid is away. He then introduces Dolores Umbridge as the new Defense Against the Dark Arts teacher. Dolores interrupts Dumbledore and tells the students that the Ministry of Magic is very concerned about their education. After Finch continues to fail at finding Dumbledore's Army's secret hideout, a student Inquisitorial Squad is created and Draco, Crabbe and Goyle join it. During one of their training sessions, they are caught by Dolores, Filch and the student members of the inquisitors. Later, Harry, Ron and Hermione go into Dolores' office to use her chimney flue. They are caught by Dolores and the student inquisitorial squad. Dolores tells Snape to bring her truth juice, but he tells her that she used the last of it on Cho Chang. Dolores is about to use the Cruciatus Curse on Harry when Hermione tells her that they know where Dumbledore's secret weapon is hidden.
During the events of Harry Potter and the Half-Blood Prince (2009) played by Tom Felton
Harry, Hermione and Ron follow Draco and Narcissa as they are sneaking around Diagon Ally and go into Borgin and Burke. On the Hogwarts train, the train is suddenly filled with a short burst of black smog and Draco asks Blaise Zabini what happened and Pansy tells him it is probably some first year student playing a prank. Crabbe and Goyle are sitting nearby as Draco is telling Blaise and Pansy that he doesn't expect to return to school next year. He notices a piece of luggage moving overhead and the train stops at the station and as Draco is leaving, he casts Petrificus Totalus towards where he saw the luggage move revealing Harry to be hiding. He kicks Harry in the face and then gets off the train.
Dumbledore introduces the students to Professor Horace Slughorn and tells the students that dark forces are trying to penetrate Hogwarts. While wandering through the Room of Requirement, Draco finds the other of the pair of Vanishing Cabinets that matches the one at Borgin and Burke. Draco practices transporting items in the Vanishing Cabinet. At Slughorn's Christmas party, Draco is caught near the party and brought before Slughorn who is with Eldred Worple and Snape drags him outside and offers to help Draco complete Voldemort's task. Draco tries sending a bird through the Vanishing Cabinets, but it dies. Harry asks Katie Bell if she knows who cursed her and notices her looking at Draco. Harry confronts Draco and they get into a fight and Harry casts a spell he learned from his potions book, almost killing Draco.
Draco uses the Vanishing Cabinet to let Bellatrix, Fenrir Greyback and three other Death Eaters into Hogwarts. Draco walks up to Dumbledore and shows him his Death Eater tattoo and tells Dumbledore that he was chosen by Voldemort to kill him. Draco casts Expelliarmus on Dumbledore, disarming him. Bellatrix, Fenrir, Amycus, Alecto, and Rowle walk over to Draco and Snape goes to where the others are and casts Avada Kedavra on Dumbledore, killing him. Snape leaves with the Death Eaters who, as they are leaving cause destruction within Hogwarts and burn down Hagrid's hut. Harry attacks Snape and Bellatrix stuns Harry with a spell. Snape reveals himself to be the Half-Blood Prince and walks away.