Neville Longbottom
Background
Neville Longbottom is a wizard from house Gryffindor and student at Hogwarts School of Witchcraft and Wizardry. His familiar is Trevor. Neville's parents, Frank and Alice, where cursed by Barty Crouch Junior and Bellatrix Lestrange who cast the Cruciatus Curse on them.
During the events of Harry Potter and the Sorcerer's Stone (2001) played by Matthew Lewis
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. Neville finds Trevor and Draco Malfoy makes a comment about Harry Potter, which causes the other students to exclaim. 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. During dinner, Seamus Finnigan tells Dean Thomas and Neville that he is of mixed heritage. Nearly Headless Nick introduces himself to the new students and The Grey Lady, The Bloody Baron, and Fat Friar float around the students. Percy Weasley gives the password to the Fat Lady and Percy takes the first year students into the Gryfffindor common room. Mail comes and Dean tells everyone Neville got a Remembrall. Later, Madame Hooch teaches the students how to ride their broomsticks. Neville 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, but Harry gets it back. At Halloween dinner, Neville tells Harry that Hermione Granger was crying in the bathroom. As Harry, Ron and Hermione are trying to sneak out of the common room, Neville stops them and Hermione uses a freeze spell on him. During the end of semester dinner, Gryffindor wins the house cup due to the actions of Harry, Hermione, Ron, and Neville.
During the events of Harry Potter and the Chamber of Secrets (2002) played by Matthew Lewis
Professor Sprout walks into class and tells the students they are going to be re-potting Mandrakes. She warns them that the Mandrake seedlings can cause those who hear their cry to faint and tells the class to put on their ear muffs. Neville falls down and Professor Sprout thinks he neglected his earmuffs, but Seamus tells her, Neville just fainted. In class, Gilderoy Lockhart introduces himself to the students as their new Defense Against the Dark Arts teacher. He un-cages Cornish Pixies in class and they start to unleash havoc onto the class. He runs away after asking Hermione, Harry and Ron to capture the Pixies when the Pixies steal his wand. Hermione casts an Immobulus spell which causes Pixies to slowly float in the air. Neville, who was flown and stuck onto a chandelier by the Pixies, asks why it always has to be him. Later, Neville runs up to Harry and then takes him back to Harry's room, which has been torn apart and his things strewn on the ground and Harry realizes the journal is missing. Before the end of the year feast, Dumbledore asks for a round of applause for Professor Sprout and Madam Pomfrey and all of the students and professors clap, including Madam Pince. Hagrid returns and everyone gives Hagrid a round of applause.
During the events of Harry Potter and the Prisoner of Azkaban (2004) played by Matthew Lewis
Harry, Ron, Seamus, Neville and Dean take turns eating candy which causes them to make noises like animals. In Divination class, Professor Sybil Trelawney tells them they will be learning Tasseomancy or the art of reading tea leaves. Lavender Brown and Parvati Patil both stare into the sky as she dramatically says they will be seeing into the beyond. She asks Neville if his grandmother is okay and then asks Ron if he is a spirit. She takes Harry's cup and tells him he has the Grim. Boy 1 reads to the class that the Grim is one of the darkest omens. During Defense Against the Dark Arts class, Lupin shows the class a wardrobe with a Boggart inside of it. He teaches them, a way to repel a Boggart is to cast the spell Riddikulus along with laughter. The students, including Girl 2 then practice chanting the spell. Neville is chosen to go first, and then the class continues with Ron going next, followed by Parvati and then Harry. When it is Harry's turn, the Boggart turns into a Dementor and Lupin is forced to return the Boggart to the wardrobe.
During the events of Harry Potter and the Goblet of Fire (2005) played by Matthew Lewis
At Hogwarts, Neville and the other students stare in awe as Hagrid directs a carriage being pulled by seven pegasus as it lands on the school grounds. The students, including Nigel, then watch as a large ship rises out of the water. 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 Defense Against the Dark Arts class, Moody teaches the class about the Unforgivable Curses and makes Neville talk about the Cruciatus Curse, until Hermione tells Moody to stop. While Harry is with Neville, Hermione, Ginny Weasley and Ron come up and Hermione tells Harry a message Ron tells her, but refuses to tell Harry himself, due to his jealousy of Harry. During the Yule Ball, Neville takes Ginny. As he is trying to figure out a way to breathe underwater for the second challenge of the tournament, Harry gets a hint from Neville to use gillyweed.
During the events of Harry Potter and the Order of the Phoenix (2007) played by Matthew Lewis
At Hogwarts, Neville, says hello to Harry, Hermione and Ron. During the 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. Dolores and McGonagall have an argument about Harry's punishment and Dolores declares that things at Hogwarts are worse than the Ministry thought. Mr Filch posts a decree stating that Dolores has been appointed as the Hogwarts High Inquisitor. Mr
Hermione organizes a meeting with some of the other students at Hog's Head, where Barman works. Somewhat Doubtful Boy wonders why they need to be taught how to combat the dark arts and Slightly Creepy Boy asks Harry to describe more of what happened when Cedric was killed. Nigel asks if Voldemort is really back, and Harry tells everyone he is. They then form a group called Dumbledore's Army. As Neville is walking down the hall, the Room of Requirement appears before him. Dumbledore's Army, which consists of Harry, Hermione, Ron, Fred Weasley, George Weasley, Ginny, Neville, Cho Chang, Nigel, Dean, Padma Patil, Parvati, Somewhat Doubtful Boy, Slightly Creepy Boy and others, uses the Room of Requirement to train.
More students join Dumbledore's Army. During one of their training sessions, they are caught by Dolores, Filch and the student members of the inquisitors. Dolores replaces Dumbledore as head of Hogwarts and all members of Dumbledore's Army are required to go to detention where they are forced to experience the same abuse as Harry was. During the year 5 OWL exam, Fred and George burst into the exam room and quit school while also creating a fireworks display that destroys all of Dolores' framed decrees. Harry and Hermione meet up with Ron, Ginny, Neville, and Luna Lovegood and they fly on Thestrals to the Ministry of Magic.
They take the elevator to the Department of Mysteries and Neville finds a globe of prophecy with Harry's name on it. Harry picks up the prophecy which states that neither him or Voldemort can survive while the other lives. They are surrounded by Death Eaters, including Lucius Malfoy, who reveals to Harry that Voldemort tricked him and Sirius Black was not in danger. They demand the prophecy and a running battle starts. Harry and the others escape to the room of the Veil where they are surrounded by the Death Eaters and his friends are captured. The Order of the Phoenix arrive and another battle starts. The prophecy is destroyed when Lucius drops it. Bellatrix Lestrange casts the Avada Kedavra spell against Sirius, hurtling him towards the Veil, which absorbs him.
During the events of Harry Potter and the Half-Blood Prince (2009) played by Matthew Lewis
Dumbledore introduces the students to Professor Horace Slughorn and tells the students that dark forces are trying to penetrate Hogwarts. Before Ron's first game, Neville wishes him good luck and Seamus tells him that he is betting on their team to win. Neville is invited to Slughorn's dinner parties. At Slughorn's Christmas party, Neville, Marcus Belby and another Waiter serve drinks.