Dudley Dursley is Harry Potter's cousin, the son of Vernon and Petunia Dursley. Dudley is a muggle who was raised to believe Harry was worthless and that Dudley was perfect. He was extremely spoiled and often bullied Harry with no consequences.
In the fifth movie, Harry saves Dudley's life and Dudley later begins to gain some respect towards his cousin.
Dudley Dursley is played by Harry Melling in the movies.
No. I actually believe WizTech is an imitation of Hogwarts.
Voice actor? Mitsuaki Madono. Same voice as Kon in Bleach.
Yes. Lou Antonio is both an actor and director.
Gellert Grindelwald was Dumbledore's childhood best friend, so it can be safe to assume that they are around the same age. There is no age given in the books for either of them, but Dumbledore is often described as extremely old. There may be an exact age written on a JK Rowling website or of the like.
The "principal actor" is the same as "lead actor". This would be an actor who has a major role in the movie versus a supporting actor or an extra. An example would be Johnny Depp as Captan Jack Sparrow in Pirates of the Caribbean versus Geoffrey Rush as Captain Barbossa.
In J.K. Rowling's biography, author Connie Ann Kirk speculates that Dumbledore was inspired by J.K.Rowling's old headmaster who was called Alfred Dunn - whose initials are the same as Albus Dumbledore's. J.K. Rowling herself has never said who inspired the character of Dumbledore, it was likely a combination of people and personalities.
Not known. (The same is true for the most of the Hogwarts teachers.)
Michael Gambon plays Albus Dumbledore in all of the Harry Potter movies except for the first two (Dumbledore was played by Richard Harris in those.) and he also played King George V in The King's Speech.
The wand with the feather from the same phoenix as Harry Potter's wand belongs to Albus Dumbledore. Both wands contain feathers from Fawkes, Dumbledore's phoenix. This connection between the wands plays a significant role in the Harry Potter series, particularly in the concept of "core loyalty" and the events surrounding their duel.
No, Dumbledore has been played by Richard Harris (Harry Potter and the Philosopher's Stone and Harry Potter and the Chamber of Secrets) and Michael Gambon (the remaining six films). Gandalf was played by Sir Ian McKellen.
they are the same people
It changes... it is never the same
If you look at their pics side by side, you can tell they are definitely different people. However, the costume and makeup teams made an effort to make them look very similar. They were both playing the same character, and the switch could have been very distracting if they hadn't.
yes they are the same actor
No. I actually believe WizTech is an imitation of Hogwarts.
For the same reason you can't say the name of that Scottish play, I guess!
Voice actor? Mitsuaki Madono. Same voice as Kon in Bleach.