Surely Fluffy, the 3-headed giant dog, would qualify.
To judge by the number of books sold and movies watched, it would have to be Harry Potter. Individual people might know more about Pikachu or like him better, but his cult following isn't remotely as large.
Albus Dumbledore
The answer to this question will spoil an exciting revelation at the end of the book (HBP). Clues to the answer: Harry hears from Snape that the shape of Tonks's Patronus has changed. Harry notices that it appeared to be a large, furry, four legged creature. He suspects it is something to do with the death of Sirius (who was her cousin). Think: are there any other characters in the book who would also match this description?
Rowling does not plan to write any more books about Harry Potter and the wizarding world. She once mentioned writing a guide to the Harry Potter books (including characters, background stories, etc). She will, however, write more books about other subjects.
Yes, Severus Snape was always in love with his childhood friend and Harry Potter's mother, Lily (Evans) Potter. Snape ruined their friendship and any chance for a relationship due to his involvement in the Dark Arts, which led to him calling Lily a mudblood. This is a large part of the reason why Snape hates Harry's father, James, who frequently bullied him throughout his school years and then ended up with the woman he loved.
A Troll.
Fluffy is a very large, vicious three-headed dog. In the movie, Fluffy is based upon a Staffordshire Bull Terrier.
Harry Potter is more famous than Shrek. The Harry Potter series of books and films have gained worldwide popularity and acclaim, with a large and dedicated fan base. Shrek is also well-known, but Harry Potter's cultural impact and recognition are greater.
J.K. Rowling's Harry Potter books are a series of fantasy novels following the adventures of a young wizard, Harry Potter, and his friends Hermione Granger and Ron Weasley as they attend Hogwarts School of Witchcraft and Wizardry and battle the dark wizard, Lord Voldemort. The series consists of seven books: "Harry Potter and the Sorcerer's Stone," "Harry Potter and the Chamber of Secrets," "Harry Potter and the Prisoner of Azkaban," "Harry Potter and the Goblet of Fire," "Harry Potter and the Order of the Phoenix," "Harry Potter and the Half-Blood Prince," and "Harry Potter and the Deathly Hallows."
Yes you will be able to get a large selection of Harry Potter items at Amazon. Some of these are cake toppers, napkins, sorting hats, balloons and cups.
Play Quidditch and make fun of Snape's abnormally large nose.
Rubeus Hagrid, keeper of keys and grounds at Hogwarts
No. She has only written books in and related to Harry Potter. Harry Potter appeals to adults anyway though, and a large majority of Harry Potter fans are teenagers and adults. It doesn't mean, however that she can't write an adult book in the future.
To judge by the number of books sold and movies watched, it would have to be Harry Potter. Individual people might know more about Pikachu or like him better, but his cult following isn't remotely as large.
There will be a total of eight Harry Potter films: Harry Potter and the Philosopher/Socerer's Stone Harry Potter and the Chamber of Secrets Harry Potter and the Prisoner of Azkaban Harry Potter and the Goblet of Fire Harry Potter and the order of the Phoenix Harry Potter and the Half Blood Prince Harry Potter and the Deathly Hallows Part 1 Harry Potter and the Deathly Hallows Part 2
Albus Dumbledore
Harry Potter talks to a Boa Constrictor, a type of snake. When Harry was almost 11 years old, his family took him to the zoo for Dudley's 11th birthday. At the zoo, Harry talks to a snake in Parseltongue, and accidentally sets it free, causing chaos, and a large grounding for Harry in his cupboard.