Hermione Granger

Origin

Born and raised in London, Hermione is the only child of muggle dentists. She had a comfortable upbringing, and her parents supported their extremely bright, if occasionally odd, child unreservedly. At the age of eleven she received a letter from Hogwarts School of Witchcraft and Wizardry informing her that she was a witch. She took to this idea well, and spent most of her time in the months leading up to her arrival at Hogwarts memorizing all of the first year texts.  

Creation

Hermione was originally created by JK Rowling for her Harry Potter series of books, making her first appearance in the first book in the series, Harry Potter and the Philosopher's Stone. She made her first appearance in comics in Mad #412. 

Major Story Arcs

Philosopher's Stone

Hermione meets Harry Potter and Ron Weasley on the train to Hogwarts. The three do not hit it off, and Ron and Harry initially dismiss Hermione as a know-it-all. However, after an unkind comment sends her into a dangerous confrontation with a troll, the boys rescue her and she takes the blame for the incident. After this, they become close friends. She becomes involved in the group's attempt to rescue the Philosopher's Stone, and her capacity for logical thinking, as well as her awareness of a number of minor magical facts, helps the group save the Stone.  

Chamber of Secrets

Hermione brews a Polyjuice Potion, an extremely complex and difficult potion, for herself, Harry, and Ron in order to extract information from Draco Malfoy. The potion is successful, but Hermione accidentally transforms into an anthropomorphic cat due to having accidentally obtained cat hair from the person she was attempting to become. She does a great deal of research into the mysterious petrifactions occurring at the school, and identifies the culprit as a basilisk. Despite taking precautions to avoid the basilisk she is petrified, though Harry and Ron are able to use her research to defeat the creature. She is revived at the end of the school year. 

Prisoner of Azkaban  

Hermione is given a Time-Turner, a magical time travelling device, to help her maintain an overloaded course schedule. She has a falling out with Ron over the apparent death of his pet rat at the hands of her cat, Crookshanks. She also draws ire from Harry for reporting the mysterious origins of his new broomstick, getting it briefly taken away. She correctly deduces that Professor Remus Lupin is a werewolf. Later, she uses the Time-Turner to take herself and Harry back in time, saving Harry's godfather Sirius Black, as well as rescuing the hippogriff Buckbeak.  

Goblet of Fire

Hermione joins Harry, Ron and most of the Weasley family in attending the Quidditch World Cup, which is attacked by Death Eaters. At school, she forms the Society for the Promotion of Elfish Welfare (SPEW for short) in order to deal with what she perceives as the harsh treatment of house elves. She becomes involved in a relationship with Bulgarian Quidditch player Viktor Krum, with whom she attends the Yule Ball. This relationship causes a falling out with Ron, who is jealous. She offers support for Harry throughout the Triwizard Tournament, doing her best to help him prepare for each task. She is the hostage chosen to be rescued by Krum in the second task of the tournament. He asks her to return to Bulgaria with him, but she refuses. She captures RIta Skeeter's animagus form in a jar in order to stop her from publishing nasty rumours about Hermione and Harry. 

Order of the Phoenix 

Hermione is made Gryffindor prefect, to the surprise of nobody. She and friend Luna Lovegood are instrumental in ensuring the publication of an interview with Harry in The Quibbler which tells his side of what happened at the end of the last year and, most importantly, restates his assertions that Lord Voldemort has returned. She comes up with the idea for, and is one of the co-founders of, Dumbledore's Army, a secret student group dedicated to instructing fellow students in offensive and defensive magic. She joins Harry and several other students in travelling to the Department of Mysteries, where they engage a group of Death Eaters in battle. She receives serious injuries from this fight, but recovers fully.

Half-Blood Prince 

Hermione is identified as an exceptional pupil and is invited to join new professor Horace Slughorn's "Slug Club". She and Ron have a falling out due to their suppressed romantic feelings towards one another, and she gets back at him for dating Lavender Brown by dating Cormac McLaggen, a brutish boy who Ron dislikes. She quickly abandons this relationship, however, due to her dislike of McLaggen. After Ron almost dies due to poisoned mead, the pair reconcile. She is suspicious of the Half-Blood Prince's book, largely due to her jealousy at being outperformed by Harry, and continually urges him to abandon the book. Later, she uncovers the identity of the original owner of the book, Severus Snape. She vows to join Harry in locating the remaining horcruxes. 

Deathly Hallows

Hermione wipes her parents memories of her and sends them to Australia where they will be safe from the imminent wizarding war. She also made extensive preparations for the eventuality of the group having to flee suddenly, and is able to take care of the group after they are forced into hiding. They attempt to locate the various horcruxes, but spend most of their time hiding from Death Eaters.  She rescues Harry from Voldemort's snake at Godric's Hollow. Later, when the group is captured by Death Eaters she is tortured by Bellatrix Lestrange for information, but even under duress she succeeds in tricking the Death Eater into believing that the sword in their possession is a fake. After they escape, she uses Polyjuice Potion to impersonate Bellatrix when the group breaks into Gringott's. She returns with the group to Hogwarts, where another horcrux is located. She is able to destroy one of the horcruxes with a basilisk fang obtained by Ron. Later, she joins in the Battle of Hogwarts, and she and Ron finally admit their feelings for one another. 

Powers and Abilities 

Hermione is a witch of exceptional power, meaning that she is able to wield magic to a number of effects. She is noted to be extremely intelligent, and mastered a number of very difficult magical skills at a relatively young age. She is a very skilled duellist, and is capable of producing a Patronus, which takes the shape of an otter.   

Other Media

Film

Harry Potter Series 
Hermione appears in all eight films in the Harry Potter movie series. She is portrayed by Emma Watson.  

Games

Hermione has appeared in numerous game adaptations of the book series. 

Literature

Harry Potter Series 
Hermione was originally created for the Harry Potter series of books. She appears in all seven books in the series.  

Parodies

Hermione has featured in numerous parodies and comedic works. Notable appearances include in the web series  Potter Puppet Pals , in a sketch on charity program  Comic Relief , and in the musical  A Very Potter Musical , among a wide range of other appearances.